eMachines D520 eMachines D720/D520 Series Service Guide - Page 28

Hard Disk Drive Interface, Specification

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

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