Hi,
Part of your problem is power related. There is a limit, maybe 0.5A maximum on the +5V supply from the port. A GBS-8220 requires 2.0 Amps at 5V.
Are you using a higher wattage power supply? An A500 PSU that can source 4.5A (check label underneath) or a modified AT/ATX PSU is ideal.
Did you get the refund agreed?
Ian
