Canon 5D, 10D, 20D, 30D, D60 and other models with Canon N3 style remote connector Canon developed a proprietary 3-pin connector for the remote control on these cameras. It is called a Canon N3 connector.
We offer a cable that allows you to directly connect these cameras to our DSUSB shutter controller. You will need the DSUSB and the DSCBL-11 (3 foot) cable.
You might want to add a male-female extension cable such as the DSCBL-03 (6 foot) or DSCBL-04 (10 foot).