MOTU is currently shipping USB/Serial MIDI interfaces. Please check this web site
for further details on each interface. We will even help you choose an interface that best suits your needs.See below for serial options.

If you would prefer to use your serial Motu MIDI Interface on your USB computer there are several adapters available that we have tested with all Motu Interfaces under FreeMIDI 1.43 and higher.

The following adapters have currently been tested.

PCI Serial Cards
Megawolf - Remus and Romulus Cards
Keyspan - SX Pro Serial card

Adapters
Griffin Technology - GPort
GeeThree - GeeThree Stealth
Keyspan - USA 28X

Note: A USB MTPAV can still be networked with a serial MTP model. If you would like to expand your MIDI capabilities you may want to purchase an MTPAV/USB and network the two interfaces together.