Cable, PC to SN-10 Instrument Panel Connector 

This cable is used to connect a PC to the instrument panel connector for the SN-10.  It includes a jumper that puts the SN-10 into PC communication mode.  This cable is included as a standard accessory with the SN-10.

Note: This cable is designed to connect to a DB-9 9-pin RS-232 serial connector on a PC.  Most current PCs don't have 9-pin serial connectors, so a USB to serial adapter will be required.  I have tried many, and found many that didn't work at all.  I finally found one that works great with most soaring instruments.  You can see details here: FTDI Chip USB Serial Adapter.