Intel Q77

19
(7) TX-RX (4-Pin): RS422/485 Header
Pin 1
TXDP
RXDN
TXDN
RXDP
2
3
4
(8) CIR (8-Pin): CIR Header
GND NC ATX 5VSB
CIR LED
V
CC
CIR _WB
2
Pin 1
CIR RX