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| RJ9 | Colour | Function | Pin |
| 1 | Blk | Ground? | |
| 2 | Red | RX (Data to Computer) | |
| 3 | Grn | | |
| 4 | Yel | ? | |
| Colour | Function | - |
| Blk | |
| Red | TX (from computer) | |
| Grn | RX (To Computer) | |
| Yel | Ground | |
Commands
| Command | Function |
| spy 16 * | Show Debug info for SIP |