Asus AP2400R-E1 - Manual (Page 63)

4-5 ASUS AP2400R-E1 2U barebone server
4.2.2 Jumpers
1. CPU clock setting (3-pin CLKSEL)
This jumper allows you to select the CPU frequency. Set to Auto (pins
1-2) to allow automatic frequency selection depending on the type of
the installed CPU. Set to pins 2-3 if you installed a 100MHz CPU.
Remove the jumper cap to manually select the CPU frequency using
the DIP switches.
PR-DLS533
CLKSEL
PR-DLS533 CLK Setting
(Default)
Auto Foster Select
by CLKSW
3 2 1 2 1 2 3
2. Gigabit LAN2 controller setting (3-pin LAN_SW)
This jumper allows you to enable or disable the 32-bit Intel ® 82540EM
Gigabit LAN controller. Setting this jumper to pins 2-3 disables the
Gigabit LAN port (RJ-45) on the rear panel that corresponds to this
controller.
PR-DLS533
PR-DLS533 LAN_SW Setting
LAN_SW
Enable Disable
(Default)