Com Does Not Function Properly - Firich Enterprise Aer PPC series User Manual

COM does not function properly

Check the I/O ports in CMOS
A)
Check IRQ conflict
B)
Check mainboard and I/O cable
C)
Cash Drawer Port does not function properly
Pin assignment of cash drawer matches that of RJ11 cash drawer port
A)
Check I/O port address
B)
PP-9645 Aer PPC
48