Pin Description
ATX Power Supply Pin Definition
| PIN | SIGNAL | PIN | SIGNAL |
| 1 | 3.3V | 11 | 3.3V |
| 2 | 3.3V | 12 | -12V |
| 3 | GND | 13 | GND |
| 4 | 5V | 14 | Soft Power ON |
| 5 | GND | 15 | GND |
| 6 | 5V | 16 | GND |
| 7 | GND | 17 | GND |
| 8 | Power OK | 18 | -5V |
| 9 | +5VSB | 19 | +5V |
| 10 | +12V | 20 | +5V |
Mouse PS/2 Port Pin Definition
| PIN | SIGNAL | DESCRIPTION |
| 1 | Mouse DATA | Mouse DATA |
| 2 | NC | No connection |
| 3 | GND | Ground |
| 4 | VCC | +5V |
| 5 | Mouse Clock | Mouse clock |
| 6 | NC | No connection |
USB Port Description
| PIN | SIGNAL | DESCRIPTION | |
| 1 | VCC | +5V | |
| 2 | - Date 0 | Negative Data Channel 0 | |
| 3 | + Data 0 | Positive Data Channel 0 | |
| 4 | GND | Ground | |
| 5 | NC | No connection | |
| 6 | VCC | +5V | |
| 7 | - Data 1 | Negative Data Channel 1 | |
| 8 | + Data 1 | Positive Data Channel 1 | |
|
9 |
GND |
Ground |
|
|
10 |
NC |
No
connection |
|
Keyboard PS/2 Pin Definition
| PIN | SIGNAL | DESCRIPTION |
| 1 | Keyboard DATA | Keyboard DATA |
| 2 | NC | No connection |
| 3 | GND | Ground |
| 4 | VCC | +5V |
| 5 | Keyboard Clock | Keyboard clock |
| 6 | NC | No connection |
LPT Port Pin Definition
| PIN | SIGNAL | DESCRIPTION |
| 1 | STROBE | Strobe |
| 2 | DATA0 | Data0 |
| 3 | DATA1 | Data1 |
| 4 | DATA2 | Data2 |
| 5 | DATA3 | Data3 |
| 6 | DATA4 | Data4 |
| 7 | DATA5 | Data5 |
| 8 | DATA6 | Dala6 |
| 9 | DATA7 | Data7 |
| 10 | AW | Acknowledge |
| 11 | BUSY | Busy |
| 12 | PE | Paper End |
| 13 | SELECT | Select |
| 14 | AUTO FEED* | Automatic Feed |
| 15 | ERROR | Error |
| 16 | "INIT*' | Initialize Printer |
| 17 | SLIW | Select In |
| 18 | GND | Ground |
| 18 | GND | Ground |
| 20 | GND | Ground |
| 21 | GND | Ground |
| 22 | GND | Ground |
| 23 | GND | Ground |
| 24 | GND | Ground |
| 25 | GND | Ground |
COM port Pin Definition
| PIN | SIGNAL | DESCRIPTION |
| 1 | DCD | Data Carry Detect |
| 2 | SIN | Serial In or Receive Data |
| 3 | SOUT | Serial Out or Transmit Data |
| 4 | DTR | Data Terminal Ready |
| 5 | GND | Ground |
| 6 | DSR | Data Set Ready |
| 7 | RTS | RequestToSend |
| 8 | CTS | Clear To Send |
| 9 | Rl | Ring Indicate |
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