MVP3 Main Board
18
2-4-2
Back Panel Connectors
There are COM1/ COM2, LPT, USB and keyboard/ mouse on case back panel.
Please refer to more details as below.
COM1/COM2
The onboard serial port 1 and port 2
are the 9-pin D-subminature male
connector
COM1 and COM2.
COM1 and COM2 can be disabled in BIOS
setup. Please refer to Chapter 3 “Integrated Peripherals” for more information.
Pin
Signal
Pin
Signal
Pin 1
Carrier detect (CD)
Pin 5 Signal ground
Pin 2
Receive data (RXD)
Pin 6 Data set ready
Pin 3
Transmit data (TXD)
Pin 7 Request to send (RTS)
Pin 4
Data therminal ready (DTR)
Pin 8 Clear to send (CTS)
Pin 9
Ring indicator
COM 2: Serial port 2
COM 1: Serial port 1