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8-PORT SERIAL HOST ADAPTER PCI
6. Connector Pin Assignments
6.1 DB25 (RS-232 DTE)
Signal Name Pin # Mode
GND Ground 7
TD Transmit Data 2 Output
RTS Request to Send 4 Output
DTR Data Terminal Ready 20 Output
RD Receive Data 3 Input
CTS Clear to Send 5 Input
DSR Data Set Ready 6 Input
DCD Data Carrier Detect 8 Input
RI Ring Indicator 22 Input
6.2 DB78 Connector Pin Assignments
Port #12345678
TD 36 12 27 3 75 51 66 42
RD 37 11 28 2 76 50 67 41
RTS 17318 2256704761
CTS 16327 2355714662
DTR 35 13 26 4 74 52 65 43
DSR 18309 2157694860
DCD 38 10 29 1 77 49 68 40
RI 15336 2454724563
GND 34 14 25 5 73 53 64 44