M-Lan compatible FireWire audio expansion port for the CME UF-series MIDI controllers.
The CME UF400e FireWire Audio Expansion Board delivers 24-bit/192kHz A/D/A conversion on two 1/4" line inputs, two 1/4" line outputs, and a mic input with preamp. Also has a FireWire port, S/PDIF digital I/O, Dual headphone jacks with volume control, and MIDI I/O/Thru.