Lenovo ThinkServer RD340 - Manual (Page 54)

26 31 Memory slots
There are 12 memory slots on the system board. For more information, see “Memory module installation
rules” on page 81.
24 Microprocessor socket 2
29 Microprocessor socket 1
If the server has two microprocessors, each of the microprocessor is secured in the microprocessor socket
on the system board. A heat sink is installed above the microprocessor to provide cooling. If the server has
only one microprocessor, the microprocessor socket 2 is protected by a microprocessor socket cover.
System board jumpers and switches
This topic provides information about the jumpers and switches on the system board.
A jumper is a short length of conductor used to set up or adjust printed circuit boards, such as the system
board of a computer. A jumper usually is encased in a non-conductive block of plastic for convenient use
and to avoid any possible damage to a live circuit. Jumper pins arranged in groups on the system board are
called jumper blocks. When two or more jumper pins are capped with a jumper, an electrical connection is
made between them and the equipment is thus instructed to activate certain settings accordingly.
The following illustration shows a jumper in the default setting position (pin 1 and pin 2). This is the correct
position for normal operation.
Figure 30. Default jumper setting
42 ThinkServer RD340 User Guide and Hardware Maintenance Manual