GE Industrial Solutions Digital Energy USB_RS232_Relay Interface Card - Manual (Page 6)

modifications reserved
OPM_CON_ACC_REL_VHX_XGB_V010
5 Installation manual USB/RS232/Relay card VH Series 1.0 (GB)
Step 2 Switch off the UPS Step 3 Remove existing card
Step 4 Insert new option card Step 5 Fix card and connect data cable(s)
Step 6 Switch on the UPS
NOTE:
USB and RS232 cannot be used simultaneously.
When both ports are used, USB will override the
RS232 connection.