Lenovo ThinkCentre M51e (English) User guide - Page 28

Installing, memory, modules

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The following illustration shows the locations of parts on the system board. 1 Speaker connector 12 PCI adapter connector 1 2 Memory connector 4 13 PCI adapter connector 2 3 Memory connector 3 14 Serial connector 2 4 Memory connector 2 15 PCI Express x1 adapter connector 5 Memory connector 1 16 Clear CMOS/Recovery jumper 6 Front panel connector 17 Battery 7 Power supply connector 18 Microprocessor fan connector 8 Parallel ATA IDE connector 19 Microprocessor 9 System fan connector 20 Microprocessor heat sink 10 SATA connectors (4) 21 12v power connector 11 PCI Express x16 graphics adapter 22 Diskette drive connector connector (some models) Installing memory modules 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 memory modules, the following rules apply: v Use 1.8 V, 240-pin, double data rate 2 synchronous dynamic random access memory (DDR2 SDRAM). v Use 256 MB, 512 MB or 1.0 GB DIMMs in any combination. Note: Only DDR2 SDRAM DIMMs can be used. To install a memory module: 1. Remove the computer cover. See "Removing the cover" on page 10. 12 User Guide

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The
following
illustration
shows
the
locations
of
parts
on
the
system
board.
±1²
Speaker
connector
±12²
PCI
adapter
connector
1
±2²
Memory
connector
4
±13²
PCI
adapter
connector
2
±3²
Memory
connector
3
±14²
Serial
connector
2
±4²
Memory
connector
2
±15²
PCI
Express
x1
adapter
connector
±5²
Memory
connector
1
±16²
Clear
CMOS/Recovery
jumper
±6²
Front
panel
connector
±17²
Battery
±7²
Power
supply
connector
±18²
Microprocessor
fan
connector
±8²
Parallel
ATA
IDE
connector
±19²
Microprocessor
±9²
System
fan
connector
±20²
Microprocessor
heat
sink
±10²
SATA
connectors
(4)
±21²
12v
power
connector
±11²
PCI
Express
x16
graphics
adapter
connector
(some
models)
±22²
Diskette
drive
connector
Installing
memory
modules
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
memory
modules,
the
following
rules
apply:
v
Use
1.8
V,
240-pin,
double
data
rate
2
synchronous
dynamic
random
access
memory
(DDR2
SDRAM).
v
Use
256
MB,
512
MB
or
1.0
GB
DIMMs
in
any
combination.
Note:
Only
DDR2
SDRAM
DIMMs
can
be
used.
To
install
a
memory
module:
1.
Remove
the
computer
cover.
See
“Removing
the
cover”
on
page
10.
12
User
Guide