IBM 808521U, Руководство пользователя

Страница: 27 / 116

The following illustration shows the locations of parts on the system board.
1
Microprocessor
11
SATA0 connector
2
DIMM connector 1
12
Front panel connector
3
DIMM connector 2
13
Clear CMOS/Recovery jumper
4
DIMM connector 3
14
Battery
5
DIMM connector 4
15
Front panel audio connector
6
Power connector
16
PCI slot 3
7
Diskette drive connector
17
PCI slot 2
8
Primary IDE connector
18
PCI slot 1
9
Secondary IDE connector
19
AGP slot (some models)
10
SATA1 connector
20
12v power connector
Installing memory
Your computer has four connectors for installing dual inline memory modules
(DIMMs) that provide up to a maximum of 4.0 GB of system memory.
When installing DIMMs, the following rules apply:
v
System memory is divided into two channels (channel A and B). DIMM
connectors 1 and 2 are channel A, and DIMM connectors 3 and 4 are channel B.
v
If DIMM connectors 1 and 3 (or 2 and 4) are filled with the same technology and
size of memory, the system operates in dual channel mode.
v
Use 2.5 V, 184-pin, double data rate synchronous dynamic random access
memory (DDR SDRAM).
v
Use 128 MB, 256 MB, 512 MB or 1.0 GB DIMMs in any combination.
v
DIMMs are 38.1 mm (1.5 inches) in height.
Note: Only DDR SDRAM DIMMs can be used.
Chapter 1. Types 8149, 8177, and 8178
11