ASUS CRW-4012A User Manual

CRW-4012A

40x/12x/48x CD-RW Drive

User’s Manual

1

Copyrights/Disclaimer

Copyright © 2002 ASUSTeK COMPUTER INC. All Rights Reserved.

No part of this manual, including the products and software described in it, may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language in any form or by any means, except documentation kept by the purchaser for
backup purposes, without the express written permission of ASUSTeK COMPUTER INC.
(“ASUS”).

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE
LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
(INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE
OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR
ERROR IN THIS MANUAL OR PRODUCT.

Product warranty or service will not be extended if: (1) the product is repaired, modified or
altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2)
the serial number of the product is defaced or missing.

The product name and revision number are both printed on the product itself. Manual
revisions are released for each product design represented by the digit before and after the
period of the manual revision number. Manual updates are represented by the third digit in
the manual revision number.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED
FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME
WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS.
ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR
INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS
AND SOFTWARE DESCRIBED IN IT.

Products and corporate names appearing in this manual may or may not be registered
trademarks or copyrights of their respective companies, and are used only for identification or
explanation and to the owners’ benefit, without intent to infringe.

Product Name: ASUS CRW-4012A
Manual Revision: 1.00 E1101
Release Date: August 2002

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ASUS CRW-4012A User’s Manual

Contents

Copyrights/Disclaimer....................................................... 2

FCC/CDC Statements ........................................................ 4

ASUS Contact Information ................................................ 5

Safety Information ............................................................. 6

Installation Notices....................................................... 6

Using the Device.......................................................... 7

Package Contents.............................................................. 8

Welcome! ............................................................................ 9

Product Introduction ......................................................... 9

Specifications............................................................... 9

Features..................................................................... 10

Front Panel ................................................................ 14

Rear Panel................................................................. 15

Installation ........................................................................ 16

System Requirements ............................................... 16

Setting the Jumper Terminals .................................... 17

Installing the CD-RW Drive........................................ 18

Connecting the Drive Cables ..................................... 20

Installing the Device Driver............................................. 21

Installing the CD-RW Software ....................................... 21

CD-RW Drive Basics ........................................................ 22

Placing a Disc into the Drive...................................... 22

Ejecting a Disc from the Drive ................................... 23

Using the Emergency Eject Pinhole .......................... 24

Using Compact Discs ...................................................... 25

Cleaning a Disc.......................................................... 25

Handling a Disc.......................................................... 25

Technical Information ...................................................... 26

Environmental Specifications..................................... 26

Electrical and Audio Specifications ............................ 26

ASUS CRW-4012A User’s Manual

3

FCC/CDC Statements

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received including interference that

may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with manufacturer’s
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING! The use of shielded cables for connection of the
monitor to the graphics card is required to assure compliance with
FCC regulations. Changes or modifications to this unit not
expressly approved by the party responsible for compliance could
void the user’s authority to operate this equipment.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the
Canadian Department of Communications.

This class B digital apparatus complies with Canadian ICES-003.

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ASUS CRW-4012A User’s Manual

ASUS Contact Information

ASUSTeK COMPUTER INC. (Asia-Pacific)

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
General Tel: [phone]
General Fax: [phone]
General Email: [e-mail]

Technical Support

MB/Optical Drives (Tel):[phone] (English)
Notebook (Tel): [phone] (English)
Desktop/Server (Tel): [phone] (English)
Support Fax: [phone]
Support Email: [e-mail]
Web Site: www.asus.com
Newsgroup: cscnews.asus.com.tw

ASUS COMPUTER INTERNATIONAL (America)

Address: 6737 Mowry Avenue, Mowry Business Center,

Building 2, Newark, CA 94560, USA
General Fax: [phone]
General Email: [e-mail]

Technical Support

Support Fax: [phone]
General Support: [phone]
Notebook Support: +1-877-918-ASUS (2787)
Web Site: www.asus.com
Support Email: [e-mail]

ASUS COMPUTER GmbH (Europe)

Address: Harkortstr. 25, 40880 Ratingen, BRD, Germany
General Fax: [phone]
General Email: [e-mail] (for marketing requests only)

Technical Support

Support Hotline: MB/Optical Drives: [phone]
Notebook (Tel): [phone]
Support Fax: [phone]
Support (Email): www.asuscom.de/de/support (for online support)
Web Site: www.asuscom.de

ASUS CRW-4012A User’s Manual

5

Safety Information

Observe the following precautions before installing and using the ASUS
CRW-4012A Drive!

Installation Notices

Do not place this device in an
unstable position, or in one that
vibrates.

Do not place this device in areas
where there is direct sunlight,
high humidity, or damp condition.

Do not use or place this device
near magnetic fields, televisions,
or radios, where there is
interference that may affect the
performance of the drive.

Do not attempt to disassemble or
repair the drive. Opening the drive
may result to exposure to laser
radiation.

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ASUS CRW-4012A User’s Manual

Safety Information

SAFETY WARNINGS

CAUTION 1. Use of any controls, adjustments, or procedures

other than those specified in this manual may
result to hazardous radiation exposure.

2. To prevent exposure to laser emanations (harmful
to human eye), do not attempt to disassemble the
drive.

Using the Device

• Do not move the device from a cold to a warm or hot environment.
Drastic change of temperature is harmful to the device.

• Before moving or uninstalling the drive, remove a disc from it, if any.

• Prevent liquids or any metal to get into the device. If this situation

occurs, contact your retailer for help.

• Do not use any evaporating solvents to clean the device. If you
accidentally sprayed any solvent on the device, use a clean cloth to
wipe it. You may also use a neutral cleaner to dilute the solvent to
easily wipe it from the device.

• Try not to interrupt the supply of power while the device is in reading or
writing mode.

• Do not place damaged or warped discs inside the device. A warped
disc may break while in use and damage the device.

• Do not place discs into the device immediately if they came from a cold
environment, specially during cold seasons. Wait until the discs have
reached room temperature.

ASUS CRW-4012A User’s Manual

7

Package Contents

Upon opening your ASUS CRW-4012A drive package, check if all the
following items are present and in good condition. If any of the items is
damaged or missing, contact your retailer immediately.

• ASUS CRW-4012A internal IDE drive

• IDE cable

• Mounting screw package

• Wire cable

• Emergency eject pin

• ASUS High-Speed CD-R blank disc

• ASUS High-Speed CD-RW blank disc

• User’s Manual

• Multi-language Quick Installation Guide

• Bundled software CD

NOTE: The above items are available in retail boxes only.

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ASUS CRW-4012A User’s Manual

Welcome!

Thank you for buying the ASUS CRW-4012A Drive!

To ensure proper installation and use of this device, read the instructions
and other important information contained in this manual.

Product Introduction

Specifications

The ASUS CRW-4012A has the following specifications.

• Speeds 40X, 32X, 24X, 16X, 12X, 8X writes

12X, 10X, 8X, 4X, 2X rewrites
48X maximum reads

• Interface ATAPI specification

• Technology support FlextraSpeed™ Technology

FlextraLink™ Technology
Double Dynamic Suspension System II (DDSS II)
Zone CLV Recording Technology

• Data buffer size 2MB

• Application discs 12cm or 8cm diameter, 1.2mm thick

CD-Audio, CD-ROM, CD-ROM/XA, CD-I,
Mixed Mode CD-ROM, Photo CD, CD-Extra,
Video CD, CD-Text, DVCD, CD-G, Karaoke
CD, I-trax, Bootable CD

• Recording form Orange Book Part 2, 3

Disc-at-once, Track-at-once
Session-at-once, Packet write,
Overburn, DAO-RAW mode

• OS compatibility MS-Windows 98/98SE/ME/2000/XP/NT

SCO Unix, Linux, Netware, OS/2 Warp

• Power supply DC 5 x (1 +/- 5%)V

DC 12 x (1 +/- 10%)V

• Dimensions 41.5 (h) x 149.0 (w) x 197.5 (d) mm

• Mass 997 g

NOTE: Refer to the section “Technical Information” on page 26 for
detailed specifications.

CRW-4012A User’s Manual

9

Features

The ASUS CRW-4012A is a CD-RW drive with 40X-write, 12X-rewrite, and
48X-read capabilities. The drive complies with the AT Attachment Packet
Interface (ATAPI) specification and comes equipped with the latest
innovative technologies in CD recording.

The ASUS CRW-4012A strategically identifies the media quality at the
beginning of the recording so that it can apply the appropriate writing
speeds and ensure effective data storage. Thanks to the FlextraSpeed™
and FlextraLink™ technologies developed by ASUS.

FlextraSpeed™ increases accuracy and reliability when rewriting across a
broad base of certified media, while FlextraLink™ prevents buffer
underrrun problems to eliminate the creation of unusable discs. The
following sub-sections describe these technologies in detail.

FlextraSpeed™ Technology

The FlextraSpeed™ technology provides the optimum solution to ensure
quality recording when using discs that require flexible speeds. The ASUS
CRW-4012A drive employs this technology that allows automatic recording
speed adjustment based on the recording media.

In addition to the fact that there are low and high quality recording media,
various other factors such as dye layer, temperature, humidity, dust,
fingerprints, etc., affect the recording characteristics of CD-R and CD-RW
discs. Due to these factors, some discs may not be able to stand the high­speed capabilities of the latest CD-RW drives. The FlextraSpeed™
technology solves this problem by automatic assessment of the disc
quality and recording capability. The recording speed is based on these
factors. If you use a high quality recording disc, you can maximize the
recording capability of the drive and get the best quality output. If you use
a low quality disc, the drive speed adjusts to the level that is most
appropriate for the disc, still optimizing the disc recording capability.

The FlextraSpeed™ technology also helps maintain the CD-RW drive
because of the controlled motor rotation speeds and reduced noise
caused by spindle air, thus prolonging the drive motor’s life and ensuring
high-quality recording.

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CRW-4012A User’s Manual

FlextraLink™ Technology

The FlextraLink™ technology provides a seamless combination of
flexibility and ultra-reliable recording quality.

FlextraLink™ incorporates a flexible strategy that prevents buffer underrun
problems caused by an empty data buffer. This CD-RW drive technology
allows continuous monitoring of the data buffer status during the write
process. Once the available data drops to approximately 1% of the total
buffer capacity, the drive stops recording and marks the last write position.
When new data is received from the host, it is loaded to the data buffer,
and the laser is repositioned to link the new data with the data already
written. FlextraLink™ uses minimal system resources so that your PC
remains fully operational throughout the writing process, and available for
other applications.

The diagram below shows the advantage of the FlextraLink™ recording
technology.

FlextraLink™ Technology Solution

Data

Data transfer

Conventional
Recording

Data

Buffer

Write Data

Memory

Recording with
FlextraLink™
Technology

Write Data

Data

Write Data

slows down

Buffer
Memory

Write process
continues

Data transfer
slows down

Buffer
Memory

Write process stops;
waits until there is
enough data for writing

Data

Buffer
Memory
Empty

Data

Write Data

Data transfer slower
than write process

Bad disc results

Data transfer continues
and fills buffer with
sufficient data for writing

Buffer
Memory

Write process continues
until writing is complete

CRW-4012A User’s Manual

11

Double Dynamic Suspension System (DDSS II)

The DDSS II is an enhanced follow up to the DDSS anti-vibration system
developed by ASUS. The DDSS CD-ROM technology is designed to
reduce the vibration generated from spindle rotation of over 8900 rpm of
40X CD-ROM drives. The DDSS II improves this feature by handling up to
over 10,000 rpm of the new 50X drives. In addition, the DDSS II stabilizes
the pick-up head of the drive in both horizontal and vertical directions,
making tracking and focusing even more precise.

Like the DDSS, the DDSS II vibration absoption structure contains a
“dynamic mass” that can absorb the vibration caused by high revolution of
spindle motor. However , the DDSS II moves the dynamic mass to be
suspended to the chassis, thus providing more stability and accuracy
when accessing data from the disc.

The following diagram illustrates the DDSS/DDSS II design structure.

DDSS / DDSS II Design Structure

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CRW-4012A User’s Manual

Zone CLV Recording Technology

The Zone Constant Linear Velocity (CLV) recording method allows you to
achieve a higher recording speed by using a different speed for each of
the four zones partitioned from the inner to the outer area in a disc.

When using the Zone CLV, the recording speed in Zone 1 is 16X, then
increases to 20X speed in Zone 2, after t1 time. In Zone 3, the recording
reaches 24X speed after t2 time. In Zone 4, the recording speed reaches
32X after t3. The maximum recording speed of 40X is attained in Zone 4
after t4 time.

Zone CLV Recording Method

Speed

40x

32x

24x

20x

16x

Zone1

Zone2

t1 t2

Zone3

t3

Zone4

t4

Zone5

Time

CRW-4012A User’s Manual

13

Front Panel

®

Recordable

Recordable

Recordable

Rewritable

High Speed

1 2 3 4 5 6

1. Headphone jack

This jack allows you to connect a headphone with a stereo mini-plug.

2. Headphone volume dial

This volume dial allows you to control the volume of the headphone
connected to the drive. Turning the dial to the left decreases the
volume, turning to the right increases volume.

40x12x48x

3. Status indicator

Single Color LED (red)

This LED lights up when you place a disc on the drive tray. The LED
flashes while data is being written on the disc (recording).

Two-color LED (red and green)

The

green LED lights up when you place disc on the drive tray. The

LED flashes while data is read from the disc.
The

red LED flashes while data is being written on the disc (recording).

4. Emergency eject pinhole

In cases when you cannot eject a disc from the drive using the eject
button due to power failure or software problems, insert a pin or a
paper clip into this hole to manually eject the tray and the disc.

5. PLAY/SKIP button

This button has two functions. If the drive is idle, pressing this button
will start playing an audio disc (if one is currenly loaded in the drive)
from the first track. While in the PLAY mode, pressing this button lets
you skip to the next track on the disc.

6. STOP/EJECT button

This button has two functions. Pressing this button at any time ejects
the disc tray so you can place or remove a disc. While in PLAY mode,
pressing this button stops playing the disc loaded in the drive.

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CRW-4012A User’s Manual

Rear Panel

1 32 4 5

1. Digital audio connector

This connector is for a digital signal output cable.

2. Analog audio connector

This connector is for an analog signal output cable.

3. Jumper terminals

These pins allow you to select either Master, Slave, or Cable Select
mode for the CD-ROM device.

4. IDE connector

This connector is for a 40-pin IDE cable to connect the drive to the IDE
interface on the motherboard.

5. Power connector

This DC connector is for a 4-pin power cable from the system power
supply.

NOTE: The jumper pins on the leftmost part of the rear panel are
factory test pins. DO NOT cover these pins with jumper blocks.

CRW-4012A User’s Manual

15

Installation

System Requirements

Before installing and using the CD-RW drive, make sure that your
computer system meets the following requirements.

• IBM-compatible Pentium 166MHz or higher PC

• Windows 98/98SE/ME/2000/XP/NT 4.0, Linux, or OS/2 Warp operating

system

• At least 64MB system memory (128MB is recommended)

• An empty 5.25-inch external drive bay

• HDD empty storage capacity of 100MB or more

Average seek time: 20ms or less
Transmission rate: 2 MB/s or more

NOTE: Do not use a hard disk that calibrates thermally during
operation.

• Recommended media:
40X CD-R Acer, CMC, Kodak, LeadData, Mitsui, Nan Ya,

Prodisc, Ritek, TDK

CD-R AMT, CMC, Hitachi, Kodak, Maxwell,

Mitsubishi Chemical, Philips, Princo, Prodisc,
Ricoh, Ritek, Sony, Taiyo Yuden, TDK,
Yamaha

CD-RW AMT, CMC, Mitsubishi Chemical, Prodisc,

Ricoh, Ritek, Sony, TDK, Yamaha

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CRW-4012A User’s Manual

Setting the Jumper Terminals

Configure the the jumpers to set the device to master or slave mode
before physically installing it to your computer chassis. Use jumper blocks
to short the pins to your desired setting.

CAUTION: Make sure to correctly place the jumper blocks over the
pins. Failure to do so may cause irreparable damage to the drive!

Jumper
Terminals

Master Mode

Cover the two pins labeled MASTER to set the CD-RW
drive as a secondary master drive. This is possible only if
your computer supports four IDE devices. The hard disk in
the computer is set as Primary Master.

Slave Mode

Cover the two pins labeled SLAVE to set the CD-RW drive
as a slave device if your computer supports only two IDE
devices.

If your computer supports four IDE devices, this setting
sets your CD-RW drive either as a Primary Slave or a
Secondary Slave.

Cable Select Mode

Cover the two pins labeled CABLE SELECT if your
computer supports a Cable Select (CSEL) signal. You
need an exclusive interface cable for this setting. Refer to
your computer manual for details.

CRW-4012A User’s Manual

17

Installing the CD-RW Drive

Follow these steps to install the drive into the computer chassis.

NOTE: Refer to your computer manual for specific instructions on
opening the chassis and installing drives.

1. Remove the cover of an empty 5.25-inch external drive bay.

2. Carefully insert the CD-RW drive into the bay and push it inward until it
is flushed to the chassis front panel. The holes on the sides of the drive
should align with the holes on the drive bay.

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CRW-4012A User’s Manual

3. Secure the drive with screws that came with the drive package. Use
two screws on each side of the drive.

IMPORTANT: Depending on the space on your chassis, you may
need to connect the drive cables before securing the drive into the
chassis. For cable connections, proceed to the following section,
“Connecting the Drive Cables.”

CRW-4012A User’s Manual

19

Connecting the Drive Cables

1. Connect the power cable plug to the power connector on the rear
panel.

2. Connect the 40-pin IDE cable plug to the IDE connector, matching the
red pin stripe on the cable with Pin 1 on the connector.

3. If your computer has a sound card or an onboard audio feature,
connect an audio interface cable to the 4-pin analog audio connector
on the rear of the drive. Connect the other end of the audio cable to the
connector on the sound card or on the 4-pin CD connector on the
motherboard.

CAUTION! All the cable plugs are slotted so that they fit in only one
orientation. If a plug does not fit in completely, try reversing it. DO
NOT use too much force when fitting the cable plugs.

Power Cable

4-pin Audio Cable

IDE Cable

NOTE: Replace the computer cover according to your computer

manual.

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CRW-4012A User’s Manual

Installing the Device Driver

Before you can use your ASUS CRW-4012A drive, you must first install the
device driver.

IMPORTANT! Make sure you that you have completed the drive
installation and have replaced the computer cover before you
proceed.

Follow these steps to install the device driver.

1. Turn on the computer.

2. Your operating system (OS) detects the new hardware (CD-RW drive)
that you installed and automatically looks for the appropriate driver.

3. Follow the screen instructions to install the driver.

Installing the CD-RW Software

The ASUS CRW-4012A drive supports the following software applications.

By AHEAD software gmbh

• Nero Burning ROM

• In CD

• Wave Editor

• Cover Designer

By Microsoft Corporation

• Media Player

• CD Player

• Active Movie

By Kodak

• Kodak Photo CD Player, V2.0 or higher

By NewTech Infosystems, Inc.

• CD-Maker

• File CD

• Overburn™ Support

• Advanced Caching

• Playlist (M3U File) Support

• SVCD Support

NOTE: Refer to the manuals that came with the specific software
for installation instructions.

CRW-4012A User’s Manual

21

CD-RW Drive Basics

Placing a Disc into the Drive

1. Press the eject button on the front of the drive to eject the tray.

2. When the drive tray ejects out of the drive, place the disc on the tray
with the label (printed) side up.

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CRW-4012A User’s Manual

NOTE: If you are using a 12-cm disc, place it on the tray making

sure that it fits the outer circular border. This border helps hold the
disc in place. If you are using an 8-cm disc, place it on the inner
circular border on the tray.

12-cm Disc

8-cm Disc

3. Press the drive eject button or lightly push the center of the drive tray
to replace the tray inside the drive.

Ejecting a Disc from the Drive

1. Press the eject button on the front of the drive to eject the tray.

2. Carefully remove the disc from the tray.

3. Press the drive eject button or lightly push the center of the drive tray
to load the tray back into the drive.

CRW-4012A User’s Manual

23

Using the Emergency Eject Pinhole

The emergency eject pinhole on the front of the drive allows you to
manually eject the drive tray and remove a disc from the drive in the
following instances:

• supply of power to the computer is cut due to electrical power outage

• the drive malfunctions

CAUTION! Use the manual method only as a last resort when the
eject button does not work. Make sure that you have turned off your
computer before ejecting the drive tray.

Follow these steps to eject the drive tray using the emergency pinhole.

1. Insert a paper clip or any pointed rod small enough to fit into the
emergency pinhole.

2. Carefully pull the tray out and remove the CD.

CAUTION! Do not force the tray open; wait until the clip has
dislodged the tray to avoid breaking the tray panel.

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CRW-4012A User’s Manual

Using Compact Discs

Take note of the instructions in this section when using compact discs.
These instructions will help you avoid damaging the discs and your
CD-RW drive.

Cleaning a Disc

Spray the disc with compressed air for about five seconds to get rid of the
dust on a disc.

Handling a Disc

Hold a disc by the edges. Do not touch the disc surface.

CRW-4012A User’s Manual

25

Technical Information

Environmental Specifications

Temperature Operation: 5°C < to < 45°C

Storage: - 20°C to < 60°C

Humidity Operation: 20% to 80% non-condensing

Storage: 15% to 85% non-condensing

Vibration Operation: 0.3G peak at 5 ~ 500 Hz

Storage: 2.0G peak at 10 ~ 500 Hz

Impact Non-operation: 1 oct/min – no damage

Less than 50G –
(at 11ms/half sine wave,
3 shock/each side)

Packaged: 1 oct/min – no damage

91 cm high –
(1 corner, 3 edges, 6 surfaces)

Acoustic Access mode: 41.5 dB TYP

Read mode: 44.5 dB TYP

(Microphone located 50cm in front of the drive, 120cm above the drive at 30° angle.)
Reliability MTBF: 100,000 power on hours

ODC (Read): 20% of power on time
ODC (Write): 1% of power on time

Mean Time To Repair (MTTR) 30 minutes

* ODC - Operating Duty Cycle

Electrical and Audio Specifications

Power Source Voltage +5V DC +12V DC

Tolerance +/- 5% +/- 10%
Ripple 150m Vpp 300m Vpp
Rating 900mA 1500mA

I/O Terminal Power connector 4-pin +5V, +12V

ATAPI terminal 40-pin
Audio out 4-pin (analog)

2-pin (digital)

Audio No. of channels 2 (stereo)

Sampling frequency 44.1 kHz
Quantization 16 bits
Distortion 0.2% max. (at 1 kHz)
S/N ratio 70 dB
Output: Headphone 0.7 V rms (typical)

Line Out 0.7 V rms (typical)

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CRW-4012A User’s Manual