A while ago, I did a hand-wire of an M0110, and it now plugs into my modern Macbook using a Mini-USB connection.
However, I still have the old-style phone cord cable laying around, and was thinking of converting it into a USB cable (since the one I'm using is a boring black). It has the right number of wires, so it should be pretty straightforward - just solder on the connectors and start using it. The only complication is that it looks like all of the USB connectors on the market work with a rounded cable. Any ideas - I suppose I could just use any connectors and some heat shrink, but then there would be a weak spot at the connectors.
The optimal situation would be some DIY connectors that take a flat cable.