Seagate ST940210A, ST980210AS, ST980210A, ST960210AS, ST920210AS User Manual

...
Product Manual
LD25 Series 5400. 2
PATA
ST980210A ST960210A ST940210A
ST980210AS ST960210AS ST940210AS ST920210AS
100433447 Rev . C August 2007
©2007, Seagate Technology LLC All rights reserved.
Publication number: 100433447, Rev. C
August 2007
Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. SeaBOARD, SeaFONE, SeaTDD, SeaTools, and the Wave logo are either registered trade­marks or tradem arks of Seaga te Technology LLC. Othe r pr oduct name s are registered trad e­marks or trademarks of their owners.
Seagate reserves the right to change, without notice, product offerings or specifications. No
part of this publication may be reproduced in any form without written permission of Seagate
Technology LLC.
LD25 Series 5400.2 Product Manual, Rev. C
i
Contents
1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Specification summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.6 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.7 Time to ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.8.1.1 Typical current profile 10
2.8.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8.3 Voltage tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8.4 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.9 Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.3 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.3.1 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.3.2 Wet bulb temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.4 Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.5 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.5.1 Operating shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.5.2 Nonoperating shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.6.1 Operating vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.6.2 Nonoperating vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.10 Acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.11 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.13 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.13.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.13.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.13.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.14 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.14.1 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . 17
2.15 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Breather filter hole precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4 How to configure the drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.4.1 How to configure and connect Serial ATA (SATA) drives . . . . . . . . . . . . . . . . . 22
3.4.1.1 How to configure the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.4.1.2 How to connect SATA cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.4.2 How to configure Parallel ATA (PATA) drives . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.4.2.1 How to configure the drive as a master or slave . . . . . . . . . . . . . . . 23
ii
LD25 Series 5400.2 Product Manual, Rev. C
4.0 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.1 Serial ATA (SATA) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1.1 Hot-Plug compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1.2 Serial ATA device plug connector pin definitions . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2 Parallel ATA (PATA) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.1 PATA interface signals and connector pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3 Supported commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.4 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.5 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.6 S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
LD25 Series 5400.2 Product Manual, Rev. C
iii
List of Figures
Figure 1. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 2. Breather filter hole location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 3. SATA connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 4. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 5. Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
iv
LD25 Series 5400.2 Product Manual, Rev. C
LD25 Series 5400.2 Product Manual, Rev. C
1

1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate® LD25
Series 5400.2 drives:
Parallel ATA (PATA) Serial ATA (SATA)
ST980210A ST980210AS
ST960210A ST960210AS
ST940210A ST940210AS
ST920210AS
Seagate LD25 Series 5400.2 drives are 2.5-inch form factor products designed for non-notebook PC applica-
tions such as:
• Consumer electronics (gaming, small personal video recorders (PVRs) and digital video recorders (DVRs)
• Ultra-small desktop PCs
• Internet appliances
• Printers, copiers, and other devices that may use disc drives for data storage
LD25 Series 5400.2 drives are quiet er, lighter and use less pow er th an 3. 5-inch dri ves. The y are ideal for appli-
cations requiring the form and fit of a notebook drive but without some of the design specifications required by
notebook drives such as high shock tolerance, high pe rfor mance , and pow er man agem ent. L D25 S eries d rives
are not presently suited for notebook applications or other environments with high operating temperatures.
These drives provide the following key features:
• 5,400-RPM spindle speed
• 2-Mbyte buffer
• High instantaneous (burst) data transfer rates
• Perpendicular recording and 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
• Quiet operation
•500 Gs nonoperating shock
• The 3D Defense System™ (Drive Defense, Data Defense, and Diagnostic Defense) provides the industry’s most comprehensive protection for disc drives
• Support for S.M.A.R.T. drive monitoring and reporting
• Support for Read Multiple and Write Multiple commands
2
LD25 Series 5400.2 Product Manual, Rev. C
LD25 Series 5400.2 Product Manual, Rev. C
3

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 ST980210A, ST980210AS, ST960210A, ST960210AS, ST940210A, ST940210AS and ST920210AS model drives.

2.1 Specification summaries

The specification s li sted in th e fo l lowing tw o t ables are pr ovided for quick refe rence. For det ails on specific ation measurement or definition, see the appropriate section of this manual.
Table 1: Specification summary for ATA/PATA (Parallel ATA) models
Drive specification ST980210A ST960210A ST940210A
Formatted Gbytes (512 bytes/sector)* 80 60 40 Guaranteed sectors 156,501,488 117,210,240 78,340,160 Bytes per sector 512 Default sectors per track 63 Default read/write heads 16 Default cylinders 16,383 Spindle speed (RPM) 5,400 Internal data transfer rate OD (Mbytes/sec max) >40 I/O data-transfer rate (Mbytes/sec max) 100 ATA data-transfer modes supported PIO modes 0–4
Cache buffer (Mbytes) 2 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) 3.0 Standby to ready (sec typical) 3.0 Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average seek, read (msec typical) <14 Average seek, write (msec typical) <15 Full-stroke seek (msec) <23 (read); <26 (write) Startup current 5V (amps typical) (max = +/- 10%) 1.0 Seek power, random r/w, desktop usage (watts, typical) 2.3 Idle mode (watts, typical) 1.95
Multiword DMA modes 0–2 Ultra DMA modes 0–5
4
LD25 Series 5400.2 Product Manual, Rev. C
Table 1: Specification summary for ATA/PATA (Parallel ATA) models
Drive specification ST980210A ST960210A ST940210A
Standby and sleep modes (watts, typical) 0.25 Voltage tolerance (including noise) 5V ± 5% Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating) 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) 175 Shock, nonoperating (Gs max at 2 msec) 500 Shock, nonoperating (Gs max at 1 msec) 350 Shock, nonoperating (Gs max at 0.5 msec) 200 Vibration, operating 0.5 G (5–350 Hz)
Vibration, nonoperating 5 Gs (10–350 Hz)
Drive acoustics, sound power (Bels) Idle** 2.4 (typical) Seek 2.6 (typical) Nonrecoverable read errors 1 per 1014 bits read Annualized Failure Rate (AFR) <0.6%, Desktop and gaming, 2400 Power-on-hours
Warranty To determine the warranty for a specific drive, use a web browser to access
Load/Unload (U/UL) cycles Controlled L/UL cycles (40°C, 50% relative humidity) Emergency L/UL cycles (40°C, 50% relative humidity)
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
*Duri ng p eriod s of dri ve id le, some offl ine a c tivity m ay occur , accor di ng to the S.M.A .R .T. speci fic ation , w hich may incr ease acoustic and
power to operational levels.
20°C (operating) 30°C (nonoperating)
8% to 90% (operating) 5% to 95% (nonoperating)
40°C (nonoperating)
0.25 G (351–500 Hz)
1.0 G (351–500 Hz)
<2.0%, PRV/DVR, 8760 Power-on-hours
the following web page: www.seagate.com/support/service/ From this page, click on the “Verify Y our 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.
50,000 20,000
LD25 Series 5400.2 Product Manual, Rev. C
5
Table 2: Specifications for SATA (Serial ATA) models
Drive specification ST980210AS ST960210AS ST940210AS ST920210AS
Formatted Gbytes (512 bytes/sector)* 80 60 40 20 Guaranteed sectors 156,501,488 117,210,240 78,340,160 41,021,800 Bytes per sector 512 Default sectors per track 63 Default read/write heads 16 Default cylinders 16,383 Spindle speed (RPM) 5,400 Internal data transfer rate OD (Mbytes/sec max) >40 I/O data-transfer rate (Mbytes/sec max) 150 ATA data-transfer modes supported PIO modes 0–4
Cache buffer (Mbytes) 2 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) 3.0 Standby to ready (sec typical) 3.0 Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average seek, read (msec typical) <14 Average seek, write (msec typical) <15 Full-stroke seek (msec) <23 (read); <26 (write) Startup current 5V (amps typical) (max = +/- 10%) 1.0 Seek power, random r/w, desktop usage (watts, typical) 2.9 Idle mode (watts, typical) 2.5 Standby and sleep modes (watts, typical) 1.15 Voltage tolerance (including noise) 5V ± 5% Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating) 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) 175 Shock, nonoperating (Gs max at 2 msec) 500 Shock, nonoperating (Gs max at 1 msec) 350 Shock, nonoperating (Gs max at 0.5 msec) 200 Vibration, operating 0.5 G (5–350 Hz)
Vibration, nonoperating 5 Gs (10–350 Hz)
Multiword DMA modes 0–2 Ultra DMA modes 0–5
20°C (operating) 30°C (nonoperating)
8% to 90% (operating) 5% to 95% (nonoperating)
40°C (nonoperating)
0.25 G (351–500 Hz)
1.0 G (351–500 Hz)
6
LD25 Series 5400.2 Product Manual, Rev. C
Table 2: Specifications for SATA (Serial ATA) models
Drive specification ST980210AS ST960210AS ST940210AS ST920210AS
Drive acoustics, sound power (Bels) Idle** 2.4 (typical) Seek 2.6 (typical) Nonrecoverable read errors 1 per 1014 bits read Annualized Failure Rate (AFR) <0.6% (Desktop and gaming: 2400 power-on-hours)
Warranty To determine the warranty for a specific drive, use a web browser to access
Load/Unload (U/UL) cycles Controlled L/UL cycles (40°C, 50% relative humidity) Emergency L/UL cycles (40°C, 50% relative humidity)
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
*Duri ng p eriod s of dri ve id le, some offl ine a c tivity m ay occur , accor di ng to the S.M.A .R .T. speci fic ation , w hich may incr ease acoustic and
power to operational levels.
<2.0% (PVR/DVR: 8760 power-on-hours)
the following web page: www.seagate.com/support/service/ From this page, click on the “Verify Y our 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.
50,000 20,000

2.2 Formatted capacity

Model Formatted capacity* Guaranteed sectors Bytes per sector
ST980210A/AS 80 Gbytes 156,501,488 512 ST960210A/AS 60 Gbytes 117,410,240 512 ST940210A/AS 40 Gbytes 78,340,160 512 ST920210AS 20 Gbytes 41,021,800 512
*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.
LD25 Series 5400.2 Product Manual, Rev. C
7

2.4 Recordin g and interface technology

Interface Parallel ATA Recording density BPI (bits/inch typical) 829,700 Track density TPI (tracks/inch typical) 143,600 Areal density (Gbits/inch2 max) 130 Spindle speed (RPM) (± 0.2%) 5,400 Internal data-transfer rate OD (Mbytes/sec max) >40 I/O data-transfer rate (Mbytes/sec max)
PATA SATA
Interleave 1:1 Cache buffer 2 Mbytes (2,048 kbytes)
100 (Ultra DMA mode 5) 150

2.5 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 ± 1.45
3.945 ± 0.057 100
0.22
8
LD25 Series 5400.2 Product Manual, Rev. C

2.6 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 1.0 1.5 Average <15 <15 Full-stroke <23 <26 Average latency 5.6 5.6
Note. These driv es ar e d es ig ne d t o con si sten tl y me et th e s ee k t imes re pre se nted in th i s m anual . Phy si cal se ek s,
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.

2.7 Time to ready

Time to ready Typical
Power-on to Ready (sec) 3.0 8.0 St andby to Ready (sec) 3.0 8.0
Max @ 25°C
LD25 Series 5400.2 Product Manual, Rev. C
9

2.8 Power specifications

The drive receives DC power (+5V) through the 4-pin power connector.

2.8.1 Power consumption

Power requiremen ts for the dr iv es are listed i n the ta ble on p age 9. Typical power measurements are ba sed 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 model
T a ble 3: DC power
Power di s s ipation +5V average (25° C)
Spinup (typical) 1.0 Amp Seek, random r/w, desktop usage
PATA SATA
Idle* PATA SATA
Standby and sleep modes PATA SATA
*During periods of drive i dle, some offl ine activity may occur acc ording to the S. M.A.R.T. speci fica tion, which may i ncrease acoust ic and
power to operational levels.
2.3 Watts
2.9 Watts
1.95 Watts
2.5 Watts
0.25 Watts 1.15 Watts
Loading...
+ 35 hidden pages