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© Sealevel Systems, Inc.
R5120 & R5140 Manual | SL9212 10/2021
Technical Description, Continued
Jumper Description
(J8) CompactFlash Voltage Setting
Use the jumper (J8) to select the voltage for the CompactFlash interface.
Function
(J8) Jumper Setting
3.3V (Default)
5V
(J1) PCI Express Backplane Jumper
Use the jumper (J1) to select the speed of the PCI Express backplane. This jumper is located on
the backplane board, under the heat sink, next to the slot that holds the motherboard. It is labeled
“PCI Express Backplane Jumper” in the
silk screen.
Function
(J1) Jumper Setting
PCI Express X1
(Default)
PCI Express X4