Acer eMachines E720 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)
I/O data
transfer rate
(Mbytes/sec
max)
DC Power Requirements
Voltage
18
Hitachi Segate
5K320-320 ST9250827AS
5K320-250 ST9120817AS
5K320-160
5K320-120
320, 250, 250, 120
160, 120
512 512
4, 4 or 3, 2, 2 4, 2
2, 2, 1,1 2, 1
5400 5400
8 MB 8 MB
SATA SATA
674 ~ 775 778
1.5 / 3.0 300
5V ±5% 5V ±5%
Specifications
WD
WD1200BEVS
120
512
2
1
5400
8 MB
SATA
850 Mbits/s
maximum
150 maximum
5V ±5%
WD
WD3200BEVT
WD1600BEVT
320, 160
512
4, 2
2, 1
5400
8 MB
SATA
850 Mbits/s
maximum
300 maximum
5V ±5%
Chapter 1