Pin | Signal | Description, color of wires |
2,3 | + | for powersupply cable |
4,5 | GND | shield |
8 | DTR | gray |
9 | DCD | violet |
10 | RI | blue |
16 | Cable detect? | green/shield |
17 | RXD | may be Tx?, yellow |
18 | TXD | may be Rx?, orange |
19 | Power On | orange |
20 | CTS | red |
21 | RTS | brown |
Additional information may be found here
Pin 16 should be shorted to GND in data-cable (in data|fax mode & modem) and left unconnected in flash cable.