Compaq MSB900 - Manual (Page 48)

DIGITAL-LOGIC AG MSB900/L Detailed Technical Manual V1.0
48
X39 Serial Port COM2
Header onboard D-SUB connector Signal
Pin 1 Pin 1 DCD
Pin 2 Pin 6 DSR
Pin 3 Pin 2 RxD
Pin 4 Pin 7 RTS
Pin 5 Pin 3 TxD
Pin 6 Pin 8 CTS
Pin 7 Pin 4 DTR
Pin 8 Pin 9 RI
Pin 9 Pin 5 GND
Pin 10 open
Attention!
If the X39 connector is used, DO NOT connect the COM2 signals on the X15 connector!
X50 USB 1 Connector (Dual-USB)
Pin Signal Remarks
1 VCC
2 USB-P1-
3 USB-P1+
4 GND
5 VCC
6 USB-P2-
7 USB-P2+
8 GND
On MPC20/21, not assembled.
X51 USB 2 Connector (Dual USB)
Pin Signal Remarks
1 VCC
2 USB-P2-
3 USB-P2+
4 GND
5 VCC
6 USB-P4-
7 USB-P4+
8 GND
Pin 1 VCC
Pin 2 USB-P-
Pin 3 USB-P+
Pin 4 GND