Com1 Mode Select For Rs-232/422/485 Jumpers; Compactflash Power Selection Jumper: Jp6 - AXIOMTEK EP820 Series User Manual

EP820 All-In-One EPIC Board User's Manual

2.3.5 COM1 Mode Select for RS-232/422/485 Jumpers:

JP5, JP8, JP11
These jumpers select the COM1 port's communication mode to
operate RS-232 or RS-422/485.
Description Function
COM1 RS-232
(Default)
RS-422
RS-485

2.3.6 CompactFlash Power Selection Jumper: JP6

This jumper is to select the voltage for CompactFlash interface.
Description
CompactFlash
Power Selection
12
Jumper Setting
JP5
JP5
JP5
Function
3.3V (Default)
5V
JP8 JP11
JP8 JP11
JP8 JP11
Jumper Setting
JP6
JP6
Jumpers and Connectors