I can special-order 10' cables, but it makes an order take longer. Also it will increase the cost for international orders, since it pushes up the weight.
done. i've sent you mail. i originally sent you mail at support@usbuirt.com about the cable length. i didn't receive a response and hence posted the question here. can you respond to my special order to confirm that you received it.
I have used a 6' extension cable and it seems to work OK. I would expect to see problems much beyond this, though, since this is a bus-powered device and added length means more cable resistance and hence lower power supply sagging.