VIA Technologies VT8237R Manual page 9

Serial Port Connector: COM
The Port is 16550A high speed communication ports that send/receive
16bytes FIFOs. You can attach a serial mouse or other serial devices directly
to the connectors.
LAN Jack (Optional)
The mainboard provides one standard RJ-45 jack for connection to Local
Area Network(LAN).You can connect a network cable to the LAN jack.
Parallel Port Connector:LPT
The mainboard provides a 25-pin female centronic connector as LPT. A
parallel port is a standard printer port that supports Enhanced Parallel Port
(EPP) and Extended Capabilities Parallel Port (ECP) mode.
MIDI/Game Connector
The mainboard provides the game port to connect a joystick or a MIDI
device.
Audio Port Connector
Line_Out is a connector for Speakers or Headphones. Line In is used for
external CD player, Tape player, or other audio devices. Mic In is a connector
for microphones. The ALC650/655 embeds an internal analog switch (by driver
software) to share LINE input with Surround output, and share MIC input with
CENTER/LFE output.
The ALC655 embeds the jack sensing function.When you plug an audio
device into the corresponding connector, the system will show you what you
pluged into the motherboard.
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