Lenovo 921525U, User Manual

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The following illustration shows the locations of parts on the system board for
some models.
1
Microprocessor and heat sink
12
Front panel connector
2
Microprocessor fan connector
13
Front USB connectors (2)
3
Memory connector 1
14
Battery
4
Memory connector 2
15
PCI Express x1 adapter connector
5
Memory connector 3
16
Serial (COM2) connector
6
Memory connector 4
17
Front audio connector
7
Power connector
18
PCI adapter connectors
8
IDE connector
19
PCI Express x16 adapter connector
(some models)
9
Diskette drive connector
20
System fan
10
SATA connectors (4)
21
12v power connector
11
Clear CMOS/Recovery jumper
Installing memory
Your computer has two or four connectors for installing DIMMs. Each DIMM can
be a maximum of 1GB providing up to a maximum of 2.0 GB or 4.0 GB of system
memory.
When installing memory modules, the following rules apply:
v
Use 2.5 V, 184-pin double data rate synchronous dynamic random access
memory (DDR SDRAM). (some models)
v
Use 1.8 V, 240-pin DDR2 SDRAM. (some models)
v Use 128 MB, 256 MB, 512 MB or 1.0 GB memory modules in any combination.
Chapter 1. Installing options
15