We will soon be offering a cable that you may be interested in for the P2140. It is the CNX-CA-XSC4 and is similar to the XSC3 shown here
except that it has an 8-pin power connector to match the output of the P2140. The small "audio" connector is the ACPI connection (grn/blk wires). If you buy the mate to this connector at Radio Shack and connect your laptop power switch wires to it, you will have a plug-and-play interface to your laptop. This will allow for very easy removal.