Specifications

MSM800XEV/XEL / Previous Product Versions
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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
J10 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
J11 Keyboard PS/2/-Mouse Utility Connector
Note: The speaker must be connected to VCC, to have a low, inactive current in the speaker.
Pin Signal Pin Signal
1 Speaker Out 2 Ground (for Speaker)
3 Reset In (active low) 4 VCC
5 Keyboard Data 6 Keyboard Clock
7 Ground 8 External Lithium Battery
9 PS/2 Mouse Clock 10 PS/2 Mouse Data
 Reset-In signal has an internal Pullup of 1k to 5Volt VCC.
The Utility connector must be wired to a standard AT-female connector:
Front side AT-Keyboard (female) Solder side AT-Keyboard (female)