eMachines D720 Series Service Manual page 28

Hard Disk Drive Interface
Item
Vendor
Model Name
Capacity (MB)
Bytes per sector
Data heads
Drive Format
Disks
Spindle speed (RPM)
Performance Specifications
Buffer size
Interface
Internal transfer rate (Mbits/
sec max)
Sustained transfer rate
(Mbytes/sec max)
I/O data transfer rate
(Mbytes/sec max)
DC Power Requirements
Voltage tolerance
Item
Vendor
Model Name
Capacity (MB)
Bytes per sector
Data heads
Drive Format
Disks
Spindle speed (RPM)
Performance Specifications
Buffer size
Interface
Internal transfer rate
(Mbits/sec max)
I/O data transfer rate
(Mbytes/sec max)
DC Power Requirements
Voltage tolerance
18
Seagate Momentus 5400.4 SATA
ST9250827AS
250
4
2
Seagate Momentus 5400.5 SATA
ST9320320AS ST9250320AS
320 250
4 4 or 3
2 or 1 2
Specification
ST9160827AS ST9120817AS
160 120
512
3 2
2 1
5,400
8MB
SATA
778
58
300
5V(DC) +/- 5%
Specification
ST9160310AS
160
512
2
1
5,400
8 MB
SATA
352
150
5V(DC) +/- 5%
ST9120310AS
120
2
1
Chapter 1