B&B Electronics user manual Table A.3 UNO-2170 Connectors and Jumpers

Table A.3: UNO-2170 Connectors and Jumpers

Label	Function
CN1	Phoenix power connector
CN2	Ethernet port 1
CN5	Ethernet port 2
CN3	COM1 RS-232 serial port
CN4	COM2 RS-232 serial port
CN14	COM3 RS-232/422/485 serial port
CN15	COM4 RS-232/422/485 serial port
CN6	USB connector
CN7	PS/2 keyboard and mouse connector
CN8	Primary IDE connector
CN9	Secondary IDE connector
CN16	PC/104 slot
CN12	Printer port
CN11	VGA DB15 display connector
CN13	PC card slot
JP4	COM3 RS-232/422/485 selection
JP5	COM4 RS-232/422/485 selection
JP6	Terminator resistor (120 ohm) for COM3/COM4 (RS-422/
	485)
JP7	System grounding jumper
SW1	Reset button
SW3	COM3/COM4 RS-422 master/slave selection
SW4	Share IRQ/Independent IRQ selection /Speed selection

25 AppendixA