Pin | Signal | Description |
1,2,3 | CTS,RTS,DSR | shorted together |
5 | RxD | in |
6 | TxD | |
7 | BOOT# | flash enable - short to ground |
8 | data enable | 120 KOm short to ground |
11 | mic in | |
12,13,14,15 | Gnd | |
16,17 | +5v | |
18 | charge |
M330 and M341i are using little different connectors, but they may be fitted with a knife