AMU ? It doesnt seem to be detecting the U3 properly. It should be saying AU3. Are you using cgminer 4.9.0 with out any settings to test.
Bitmain continues to distribute its own binaries ignoring any development I put into mainline cgminer so their driver still uses a different driver name, trashes other icarus drivers, needs lots of weird command line options to get working etc. So people using their binary get devices as AMU.
Dogie, why did Bitmain send CK a unit to develop CGMiner support (for which it appears he did a fine job!) for this device and then not use it?