Acer eMachines eM250, Руководство по обслуживанию

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14 Chapter 1
System Memory
System Storage
Hard Disk Drive Interface
Item Specification
Memory controller Built in
Memory size 512MB or 1GB DDR2 RAM (if 2Gb die support is available)
DIMM socket number 1
Supports memory size per socket 2 GB
Supports maximum memory size 2 GB
Supports DIMM type DDR II 533Mhz SDRAM memory interface design
Supports DIMM Speed 533Mhz SDRAM
Item Specification
HDD • 9.5mm height, 2.5" HDD
• Easily removable no more than two screws
• SATA bus
• 160/250GB and above
• 5400 rpm
• SATA connector BTO
Item Specification
Vendor &
Model Name Seagate
ST9160310AS Seagate
ST9250827AS Seagate
ST9250315AS HGST L9A300
HTS543225
HTS543216 WD
WD2500BEVT
WD1600BEVT
Capacity
(GB) 160 250 250 250, 160 250, 160
Bytes per
sector 512 512 512 512 512
Data heads 2 4 2 3, 2 3, 2
Drive Format
Disks 1 2 1 2, 1 2, 1
Spindle
speed (RPM) 5400 5400 5400 5400 5400
Performance Specifications
Buffer size 8 MB 8 MB TBD 8 MB 8 MB
Interface SATA SATA SATA SATA SATA
Fast data
transfer rate
(Mbits/sec,
max) 352 778 TBD 3000 3000
Media data
transfer rate
(Mbytes/sec
max) 150 300 TBD 775 850
DC Power Requirements
Voltage
tolerance 5V ±5% 5V ±5% TBD 5V ±5% 5V ±5%