Seagate U4 User Manual
ROBUST ENTRY-LEVEL DISC DRIVES PROVIDE GREAT VALUE,
EASE OF HANDLING, AND WHISPER-QUIET OPERATION
> ULTRA ATA/66, 5,400 RPM
> IDEAL FOR LOWEST-COST PC SYSTEMS
> SEAGATE 3D DEFENSE SYSTEM PROTECTS DATA
AND REDUCES FIELD RETURNS
> SOFT SEASHIELD
®
REDUCES DAMAGE FROM HANDLING
AND ESD
FORMATTED CAPACITIES OF 4.3 TO 8.4 GBYTES
5,400
RPM
ULTRA ATA/66
www.seagate.com
U4
FAMILY
Seagate, Seagate Technology, the Seagate logo, U4 and the U4 logo are registered trademarks of Seagate Technology, Inc. All oth er trademarks or registered
trademarks are the property of their respective owners. Specifications and product offerings subject to change without notice. ©1999 Seagate Technology, Inc.
All rights reserved. Printed in USA. (CS1190) Pub. No. 1508-002 10/99 Printed on recycled paper.
Corporate Headquarters Seagate Technology 920 Disc Drive, Scotts Valley, California, 95066, UNITED STATES 831-438-6550
ASIA/PACIFIC Seagate Technology International Ltd. 151 Lorong Chuan, New Tech Park #06-01, SINGAPORE 556741, 65-488-7200
EUROPE AND AFRICA Seagate Technology SA 62 bis, avenue André Morizet, 92643 Boulogne-Billancourt Cedex, FRANCE 33 1-41 86 10 00
CAPACITY AND INTERFACE
Formatted Gbytes (512 bytes/sector)
Interface
PERFORMANCE
Maximum Internal Transfer Rate (Mbits/sec)
Maximum External Transfer Rate (Mbytes/sec)
Average Sustained Transfer Rate (Mbytes/sec)
Multisegmented Cache (Kbytes)
Average Seek (msec)
Average Latency (msec)
Spindle Speed (RPM)
CONFIGURATION/ORGANIZATION
Discs/Heads
Bytes per Sector
Logical CHS
Recording Method
RELIABILITY/DATA INTEGRITY
Contact Start-Stops
SeaShield System
S.M.A.R.T. Capable
Nonrecoverable Read Errors per Bits Read
Service Life/Limited Warranty (years)
POWER REQUIREMENTS
+12 VDC ± 10% (amps max)
+5 VDC ± 5% (amps max)
Power Management (watts) Seek
Read/Write
Idle
Standby
ENVIRONMENTAL
Operating Temperature (°C)
Nonoperating Temperature (°C)
Operating Shock @ 2 msec (Gs)
Nonoperating Shock @ 2 msec (Gs)
Acoustics, Idle (Bels–sound power)
PHYSICAL
Height (in/mm)
Width (in/mm)
Depth (in/mm)
Weight (lb/g)
Capacity calculated as 1 Gbyte = 109bytes
U4 Family
ST36421AST34311A
U4 Family
ST38421A
U4 Family
www.seagate.com
3.5
INCH DISC DRIVE
4.3
Ultra ATA/66
206
66.6
>8.5
256
10.5
5.56
5,400
1/2
512
8,944/15/63
EPRML (16/17)
50,000
Yes
Yes
10 per 10
13
5/3
1.5
0.5
7.0
5.7
3.1
0.8
0 to 55
–40 to 70
63
300
3.3
1/26.1
4/102.0
5.75/147.0
1.2/544
6.4
Ultra ATA/66
206
66.6
>8.5
256
10.5
5.56
5,400
2/3
512
13,330/15/63
EPRML (16/17)
50,000
Yes
Yes
10 per 10
13
5/3
1.5
0.5
7.0
5.7
3.1
0.8
0 to 55
–40 to 70
63
300
3.3
1/26.1
4/102.0
5.75/147.0
1.2/544
8.4
Ultra ATA/66
206
66.6
>8.5
256
10.5
5.56
5,400
2/4
512
16,368/16/63
EPRML (16/17)
50,000
Yes
Yes
10 per 10
13
5/3
1.5
0.5
7.0
5.7
3.1
0.8
0 to 55
–40 to 70
63
300
3.3
1/26.1
4/102.0
5.75/147.0
1.2/544
> ROBUST ENTRY-LEVEL DISC DRIVES
PROVIDE GREAT VALUE, EASE OF HANDLING
AND WHISPER-QUIET OPERATION
> ULTRA ATA/66, 5,400 RPM
> IDEAL FOR LOWEST-COST PC SYSTEMS
> SEAGATE 3D DEFENSE SYSTEM PROTECTS
DATA, REDUCES FIELD RETURNS
> SOFT SEASHIELD®REDUCES DAMAGE
FROM HANDLING AND ESD
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