Keyboard Connector

Miniature, circular DIN, 6-position, receptacle

PinSignal
1KBData
2N/C
3Ground
4+5 VDC
5KBClock
6N/C


Mouse Connector

Miniature, circular DIN, 6-position, receptacle

PinSignal
1MSData
2N/C
3Ground
4+5 VDC
5MSClock
6N/C


COM1 Connector

9-Pin Sub D, plug, DB9

PinSignalMeaning
1DCDCarrier Detect
2RXReceive Data
3TXTransmit Data
4DTRData Terminal Ready
5GroundSignal Ground
6DSRData Set Ready
7RTSRequest to Send
8CTSClear to Send
9RIRing Indicator


COM2 Connector

9-Pin Sub D, plug, DB9

PinSignalMeaning
1DCDCarrier Detect
2RXReceive Data
3TXTransmit Data
4DTRData Terminal Ready
5GroundSignal Ground
6DSRData Set Ready
7RTSRequest to Send
8CTSClear to Send
9RIRing Indicator


Parallel Port Connector

25-position, Sub D, receptacle, DB25

PinSignalMeaning
1-STBStrobe
2PD0Data bit 0
3PD1Data bit 1
4PD2Data bit 2
5PD3Data bit 3
6PD4Data bit 4
7PD5Data bit 5
8PD6Data bit 6
9PD7Data bit 7
10-ACKAcknowledge
11BUSYBusy
12PEPaper End
13SLCTSelect
14-AFDAuto line feed
15-ERRError
16-INITInitialize printer
17-SLINSelect in
18-25GroundGround


MIDI/Game Port Connector

15-position, Sub D, receptacle

PinSignalMeaning
1+5V 
2SWA_HJoystick switch input
3TA_HJoystick timer (XY positioning)
4GND 
5GND 
6TB_HJoystick timer (XY positioning)
7SWB_HJoystick switch input
8+5V 
9+5V 
10SWC_HJoystick switch input
11TC_HJoystick timer (XY positioning)
12MSO_HMIDI serial data output
13TD_HJoystick timer (XY positioning)
14SWD_HJoystick switch input
15MSI_HMIDI serial input (either MPU401 or Sound Blaster formats


Speaker Out Connector

3.5mm phone jack connector (stereo). When no plug is present here and at the side headphone jack, the sound is routed to the internal speaker.


Audio In Connector

3.5mm phone jack connector (stereo). Connects an external stereo source to the ES1888 audio controller. When no plug is present, the LineL and LineR signals are grounded.


Twisted_Pair Connector

8-pin MJ-8 (RJ-45)

PinSignalMeaning
1TT_HTransmit +
2TT_LTransmit -
3TR_HReceive +
4N/C 
5N/C 
6TR_LReceive -
7N/C 
8N/C 


ThinWire Connector (BNC)

10BASE2 ThinWire BNC connector (coaxial)