Normal Retail Price $2.95, 25% Off Discount Sale Price $2.22

The OpenPilot CopterControl boards include one of these cables, but if you loose yours, or need an additional one for experimentation or hooking up other peripherials, you can pick up a spare.

This 4-wire cable has a 4-pin JST-SH type connector at each end, and is designed to plug into the Serial and Flexi-Ports on the CopterControl board.