Seagate ST9402112A, ST960812A, ST950814A, ST930218A, ST980829A User Manual

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Product Manual
Momentus® 4200.2
ST9120824A ST9100825A ST980829A ST960812A ST950814A ST9402112A ST930218A
100367124 Rev . C August 2007
©2004-2007, Seagate Technology LLC All rights reserved. Publication number: 100367124, Rev. C August 2007
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate
Technology LLC in the United States and/or other countries. Momentus, Seagate­SeaBOARD, SeaFONE, SeaTDD, and SeaTools are either trademarks or registered trade­marks of Seagate Te chnolog y LLC or one of it s af filiate d comp a nies in the United States a nd/ or other countries. All other trademarks or registered trademarks are the property of their respective owners.
One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Quantitative usage examples for various applications are for illustrative p urpo ses. Actual quan tities w ill vary based on vari ou s factors, including fi le size, file format, features and application software. Seagate reserves the right to change, without notice, product offerings or specifications.
Momentus 4200.2 Product Manual, Rev. C
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Contents
1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Specification summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.8 Time to ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.9 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.9.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.9.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.9.3 Voltage tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.9.4 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.10 Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.10.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.10.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.10.3 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.10.4 Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.10.5 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.10.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.11 Acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.14.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.15 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.16 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Handling and static discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Jumper settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2.1 Master/slave configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 ATA interface signals and connector pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1.1 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.2 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.0 Compatibility summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.1 Installation considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2 System Compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.3 BIOS versions tested. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.4 Operating system versions tested. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.5 Compatibility test configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.6 Software utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.7 Other certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
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Momentus 4200.2 Product Manual, Rev. C
Momentus 4200.2 Product Manual, Rev. C
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List of Figures
Figure 1. Momentus 4200.2 PATA disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Typical 5V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 3. Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 4. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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Momentus 4200.2 Product Manual, Rev. C
Momentus 4200.2 Product Manual, Rev. C
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1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus 4200.2 drives:
• ST9120824A
• ST9100825A
• ST980829A
• ST960812A
• ST950814A
• ST9402112A
• ST930218A These drives provide the following key features:
• 4,200-RPM-Class Performance spindle speed. Actual spindle speed is 5,400 RPM.
• 8-Mbyte buffer.
• Quiet operation. Fluid Dynamic Bearing (FDB) motor.
• High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.
• Tunneling Magnetoresistive (TMR) recording heads.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Full-track multiple-sector transfer capability without local processor intervention.
• 800 Gs nonoperating shock, and 250 Gs operating shock.
• SeaTools™ diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Support for Read Multiple and Write Multiple commands.
• Support for autodetection of master/slave drives that use cable select (CSEL).
®
Figure 1. Momentus 4200.2 PATA disc drive
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Momentus 4200.2 Product Manual, Rev. C
Momentus 4200.2 Product Manual, Rev. C
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2.0 Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate ST9120824A, ST9100825A, ST980829A, ST960812A, ST950814A, ST9402112A, and ST930218A model drives.

2.1 Specification summary

The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.
Table 1: Specifications for 120, 100, and 80 GB models
Drive specification ST9120824A ST9100825A ST980829A
Formatted Gbytes (512 bytes/sector)* 120 100 80 Guaranteed sectors 234,441,648 195,371,568 156,301,488 Bytes per sector 512 Physical read/write heads 4 4 3 Discs 2 2 2 Cache (Mbytes) 8 Recording density, BPI (bits/inch typical) 778k Track density. TPI (tracks/inch typical 126k Areal density (Gbits/inch2 max) 98.2 Spindle speed (RPM) 4,200 RPM-class performance (actual spin speed: 5,400 RPM) Internal data transfer rate OD (Mbytes/sec max) 37 I/O data-transfer rate (Mbytes/sec max) 100 ATA data-transfer modes supported PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5 Height 9.5 +/–0.2 mm (0.374 +/–.008 inches) Width 69.85 +/–0.25 mm (2.750 +/–0.010 inches) Length 100.2 +/–0.25 mm (3.945 +/–0.010 inches) Weight (typical) 100 grams (0.22 lb) Average latency (msec) 5.6 Power-on to ready (sec typical) 3.5 Standby to ready (sec typical) 3.0 Startup current 5V (typical) 1.0 amps Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average seek time (msec typical) 12.5 Average seek, read (msec typical) 12.5 Average seek, write (msec typical) 14.5 Full-stroke seek (msec) 22 (typical); 24 (max) Seek power (typical) 2.00 watts
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Momentus 4200.2 Product Manual, Rev. C
Table 1: Specifications for 120, 100, and 80 GB models
Drive specification ST9120824A ST9100825A ST980829A
Read/write power (typical) Read: 1.80 watts; Write: 1.80 watts Idle mode (low power, typical) 0.80 watts Standby mode 0.26 watts (typical)*** Sleep mode 0.26 watts (typical)*** Voltage tolerance (including noise) 5V ± 5% Ambient temperature 5° to 55°C (operating)
Temperature gradient (°C per hour max, noncondensing)
Relative humidity (noncondensing)
Relative humidity gradient 30% per hour max Wet bulb temperature (°C max) 30°C (operating)
Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000 ft) Altitude, nonoperating (below mean sea level, max) –304.8 m to 12,192 m (–1,000 ft to 40,000 ft) Shock, operating
(Gs max at 2 msec) Shock, nonoperating
(Gs max at 2 msec) Shock, nonoperating
(Gs max at 1 msec) Shock, nonoperating
(Gs max at 0.5 msec) Vibration, operating (max displacement may apply
below 10 hz) Vibration, nonoperating (max displacement may
apply below 22 hz) Drive acoustics, sound power (bels), 2 disc Idle** 2.4 (typical)
Performance seek 2.9 (typical)
Nonrecoverable read errors 1 per 1014 bits read Annualized Failure Rate (AFR) 0.73% Load/Unload (U/UL) cycles
25°C, 50% relative humidity
32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 10% relative humidity 55°C, 16% relative humidity
Service life 5 years
Warranty
–40° to 70°C (nonoperating) 20°C (operating)
30°C (nonoperating) 5% to 90% (operating)
5% to 95% (nonoperating)
40°C (nonoperating)
250
800
900
400
1.0 Gs (0 to peak, 5–500 Hz)
5.0 Gs (0 to peak, 5–500 Hz)
2.6 (max)
3.1 (max)
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
5 years on distribution units. To determine the warranty for a specific drive, use a web browser to access the following web page: www.seagate.com/support/service/ From this page, click on the “Verify Your Warranty” link. Yo u will be asked to pro­vide the drive serial number, model number (or part number) and country of pur­chase. The system will display the warranty information for your drive.
Momentus 4200.2 Product Manual, Rev. C
5
Table 1: Specifications for 60, 50, 40, and 30 GB models
Drive specification ST960812A ST950814A ST9402112A ST930218A
Formatted Gbytes (512 bytes/sector)* 60 50 40 30 Guaranteed sectors 1 17,210,240 97,692,174 78,140,160 58,605,120 Bytes per sector 512 Physical read/write heads 2 2 2 1 Discs 1 1 1 1 Cache (Mbytes) 8 Recording density, BPI (bits/inch typical) 778k Track density. TPI (tracks/inch typical 126k Areal density (Gbits/inch2 max) 98.2 Spindle speed (RPM) 4,200 RPM-class performance (actual spin speed: 5,400 RPM) Internal data transfer rate OD (Mbytes/sec max) 37 I/O data-transfer rate (Mbytes/sec max) 100 ATA data-transfer modes supported PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5 Height 9.5 +/–0.2 mm (0.374 +/–.008 inches) Width 69.85 +/–0.25 mm (2.750 +/–0.010 inches) Length 100.2 +/–0.25 mm (3.945 +/–0.010 inches) Weight (typical) 100 grams (0.22 lb) Average latency (msec) 5.6 Power-on to ready (sec typical) 3.5 Standby to ready (sec typical) 3.0 Startup current 5V (typical) 1.0 amps Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average seek time (msec typical) 12.5 Average seek, read (msec typical) 12.5 Average seek, write (msec typical) 14.5 Full-stroke seek (msec) 22 (typical); 24 (max) Seek power (typical) 2.00 watts Read/write power (typical) Read: 1.80 watts; Write: 1.80 watts Idle mode (low power, typical) 0.80 watts Standby mode 0.26 watts (typical)*** Sleep mode 0.26 watts (typical)*** Voltage tolerance (including noise) 5V ± 5% Ambient temperature 5° to 55°C (operating)
Temperature gradient (°C per hour max, noncondensing)
Relative humidity (noncondensing)
Relative humidity gradient 30% per hour max Wet bulb temperature (°C max) 30°C (operating)
Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000 ft) Altitude, nonoperating (below mean sea level, max) –304.8 m to 12,192 m (–1,000 ft to 40,000 ft) Shock, operating (Gs max at 2 msec) 250
–40° to 70°C (nonoperating) 20°C (operating)
30°C (nonoperating) 5% to 90% (operating)
5% to 95% (nonoperating)
40°C (nonoperating)
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Momentus 4200.2 Product Manual, Rev. C
Table 1: Specifications for 60, 50, 40, and 30 GB models
Drive specification ST960812A ST950814A ST9402112A ST930218A
Shock, nonoperating (Gs max at 2 msec) 800 Shock, nonoperating (Gs max at 1 msec) 900 Shock, nonoperating (Gs max at 0.5 msec) 400 Vibration, operating
(max displacement may apply below 10 hz) Vibration, nonoperating
(max displacement may apply below 22 hz) Drive acoustics, sound power (bels), 2 disc Idle** 2.4 (typical)
Performance seek 2.9 (typical)
Nonrecoverable read errors 1 per 1014 bits read Annualized Failure Rate (AFR) 0.73% Load/Unload (U/UL) cycles
25°C, 50% relative humidity
32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 10% relative humidity 55°C, 16% relative humidity
Service life 5 years
Warranty
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During periods of drive idle, some offline activity may occur, according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
***Typical notebooks will pull power to th e drive when ente ring S3 and S4; while in the S3 and S4 states, dr ive sleep and drive standby
modes will not contribute to battery power consumption.
1.0 Gs (0 to peak, 5–500 Hz)
5.0 Gs (0 to peak, 5–500 Hz)
2.6 (max)
3.1 (max)
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
5 years on distribution units. To determine the warranty for a specific drive, use a web browser to access the following web page: www.seagate.com/support/service/ From this page, click on the “Verify Your Warranty” link. You will be asked to provide the drive serial number, model number (or part number) and country of purchase. The system will display the warranty information for your drive.
Momentus 4200.2 Product Manual, Rev. C
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2.2 Formatted ca pacity

Model Formatted capacity* Guaranteed sectors Bytes per sector
ST9120824A 120 Gbytes 234,441,648 512 ST9100825A 100 Gbytes 195,371,568 512 ST980829A 80 Gbytes 156,301,488 512 ST960812A 60 Gbytes 117,210,240 512 ST950814A 50 Gbytes 97,692,174 512 ST9402112A 40 Gbytes 78,140,160 512 ST930218A 30 Gbytes 58,605,120 512
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.

2.3 Default logi cal geometry

Cylinders Read/write heads Sectors per track
16,383 16 63
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the number of guaranteed sectors as defined above.

2.4 Physical organization

Model Read/write heads Number of discs
ST9120824A 4 2 ST9100825A 4 2 ST980829A 3 2 ST960812A 2 1 ST950814A 2 1 ST9402112A 2 1 ST930218A 1 1
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Momentus 4200.2 Product Manual, Rev. C

2.5 Recording and interfac e technology

Technology Specification
Interface Parallel ATA Recording method RLL 0,11 Recording density BPI (bits/inch typical) 778k Track density TPI (tracks/inch typical) 126k Areal density (Mbits/inch2 max) 98.2 Spindle speed (RPM) (± 0.2%) Internal data-transfer rate OD (Mbytes/sec max) 37 I/O data-transfer rate (Mbytes/sec max) 100 (Ultra DMA mode 5) Interleave 1:1 Cache buffer 8 Mbytes (8,184 kbytes)
4,200 RPM-class performance (actual spin speed: 5,400 RPM)

2.6 Physical characteristics

Height (mm)
(inches)
Width (mm)
(inches)
Length (mm)
(inches)
Typical weight (grams)
(pounds)
9.5 +/-0.2
0.374 +/-0.008
69.85 +/-0.25
2.750 +/-0.010
100.2 +/-0.25
3.945 +/-0.010 100
0.22

2.7 Seek time

Seek measurem ent s a re t ake n wi th nom inal po w er a t 25 °C amb ient temperature. All tim es a re m easu red using drive diagnostics. The specifications below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.
T yp ical seek times (msec) Read Write
Track-to-track 1.5 2.0 Average 12.5 14.5 Full-stroke 22.0 24.0 Average latency 5.56 5.56
Note. These drives are designed to consistently meet the seek times represented in this manual. Physical
seeks, regardless of mode (such as track-to-track and average), are expected to meet or exceed the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these speci­fications.
Momentus 4200.2 Product Manual, Rev. C
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2.8 Time to ready

Time to ready Typical
Power-on to Ready (sec) 3.5 8.0 St andby to Ready (sec) 3.0 8.0
Max @ 25°C

2.9 Power specifications

The drive receives DC power (+5V) through the interface connector.

2.9.1 Power consumption

Power requiremen ts for the dr i ves are lis ted in the ta bl e on p age 9 . Typical power measurements are based on an average of drives tested, under nominal conditions, at 25°C ambient temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle re aches operating speed.
• Seek mode
During seek mod e, the read /write actuator arm move s toward a spe cific positi on on the d isc surface and does not execute a read or write operati on. Servo ele ctronics ar e acti ve. Seek mode power is mea sure d based on three random seek operations every 100 msecs. This mode is not typical.
Read/write power and current Read/write power is measured with the heads on track, based on three 63 sector read or write operations
every 100 msecs.
• Idle mode power*
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.
• Standby mode
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down mode.
T a ble 2: DC power
Power di s s ipation +5V Average (25° C)
Spinup (typical) 1.0 amps Seek 2.00 watts Read 1.80 watts Write 1.80 watts Idle, performance mode* 1.70 watts Idle, active* 0.99 watts Idle, low power mode* 0.80 watts Standby 0.26 watts Sleep 0.26 watts
*Duri ng pe riods of driv e idl e, some off lin e a c tivit y ma y occu r ac cord in g t o t he S.M .A. R. T. speci fic ation , w hich may increase acou s tic an d
power to operational levels.
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