Pinouts of some common connectors on the PC.
| pin | voltage | cable color | pin | voltage | cable color | |
| 1 | power good | orange | 7 | gnd | black | |
| 2 | + 5 | red | 8 | gnd | black | |
| 3 | + 12 | yellow | 9 | -5 | white | |
| 4 | -12 | blue | 10 | +5 | red | |
| 5 | gnd | black | 11 | +5 | red | |
| 6 | gnd | black | 12 | +5 | red |
AT keyboard connector
|
PS/2 mouse connector
|
IrDA/ASKIR
|
|
System end (6-pin DIN) Pin 1 +KBD data Pin 2 Reserved Pin 3 Ground Pin 4 +5 Vdc Pin 5 +KBD clk Pin 6 Reserved Shield Frame ground |
Keyboard end (6-pin phone) Pin A Reserved Pin B +KBD data Pin C Ground Pin D +KBD clock Pin E +5v Pin F Reserved Shield Frame ground |
| signal | pin | signal | pin | |
| strobe | 1 | auto feed | 14 | |
| data bit 0 | 2 | error | 15 | |
| data bit 1 | 3 | init | 16 | |
| data bit 2 | 4 | slct in | 17 | |
| data bit 3 | 5 | gnd | 18 | |
| data bit 4 | 6 | gnd | 19 | |
| data bit 5 | 7 | gnd | 20 | |
| data bit 6 | 8 | gnd | 21 | |
| data bit 7 | 9 | gnd | 22 | |
| acj | 10 | gnd | 23 | |
| busy | 11 | gnd | 24 | |
| pe | 12 | gnd | 25 | |
| slct | 13 |
| signal | pin(DB25) | pin(DB9) | source |
| shield | 1 | ||
| TD - transmitted data | 2 | 3 | DTE |
| RD - recieved data | 3 | 2 | DCE |
| RTS - request to send | 4 | 7 | DTE |
| CTS - clear to send | 5 | 8 | DCE |
| DSR - data set ready | 6 | 6 | DCE |
| gnd - signal ground | 7 | 5 | |
| DCD - data carrier detector | 8 | 1 | DCE |
| +12V | 9 | ||
| -12V | 10 | ||
| frequencysignal | 11 | ||
| 2nd DCD | 12 | DCE | |
| 2nd CTS | 13 | DCE | |
| 2nd TD | 14 | DTE | |
| tx signal element timing | 15 | DCE | |
| 2nd RD | 16 | DCE | |
| rx signal element timing | 17 | DCE | |
| local loopback | 18 | DTE | |
| 2nd RTS | 19 | DTE | |
| DTR - data terminal ready | 20 | 4 | DTE |
| remote loopback | 21 | DTE | |
| RI - ring indicator | 22 | 9 | DCE |
| data signal rate selector | 23 | both | |
| tx signal element timing | 24 | DTE | |
| test mode | 25 | DCE |
| pin | signal | pin | signal | |
| 1 | gnd | 2 | FDHDIN | |
| 3 | gnd | 4 | reserved | |
| 5 | gnd | 6 | FDEDIN | |
| 7 | gnd | 8 | index | |
| 9 | gnd | 10 | motor enable | |
| 11 | gnd | 12 | drive select B | |
| 13 | gnd | 14 | drive select A | |
| 15 | gnd | 16 | motor enable | |
| 17 | gnd | 18 | DIR | |
| 19 | gnd | 20 | STEP | |
| 21 | gnd | 22 | write data | |
| 23 | gnd | 24 | write gate | |
| 25 | gnd | 26 | track 00 | |
| 27 | gnd | 28 | write protect | |
| 29 | gnd | 30 | read data | |
| 31 | gnd | 32 | side 1 select | |
| 33 | gnd | 34 | diskette |
| pin | signal | pin | signal | |
| 1 | reset IDE | 2 | gnd | |
| 3 | host data 7 | 4 | host data 8 | |
| 5 | host data 6 | 6 | host data 9 | |
| 7 | host data 5 | 8 | host data 10 | |
| 9 | host data 4 | 10 | host data 11 | |
| 11 | host data 3 | 12 | host data 12 | |
| 13 | host data 2 | 14 | host data 13 | |
| 15 | host data 1 | 16 | host data 14 | |
| 17 | host data 0 | 18 | host data 15 | |
| 19 | gnd | 20 | key | |
| 21 | DRQ3 | 22 | gnd | |
| 23 | I/O write | 24 | gnd | |
| 25 | I/O read | 26 | gnd | |
| 27 | IOCHRDY | 28 | BALE | |
| 29 | DACK3 | 30 | gnd | |
| 31 | IRQ14 | 32 | IOCS16 | |
| 33 | addr 1 | 34 | gnd | |
| 35 | addr 0 | 36 | addr 2 | |
| 37 | chip select 0 | 38 | chip select 1 | |
| 39 | activity | 40 | gnd |
| pin | signal | pin | signal | pin | signal | ||
| 1 | red | 6 | red return | 11 | |||
| 2 | green | 7 | green return | 12 | |||
| 3 | blue | 8 | blue return | 13 | horizontal zync | ||
| 4 | 9 | 14 | vertical zync | ||||
| 5 | 10 | 15 |