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MIDISport UNO is Not Inputting Accurate MIDI Data to the Computer
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Q: I recently purchased a MIDISPORT Uno 1x1 interface and I am having trouble with MIDI input to the computer.  What should I do?

A: Please follow the steps below to test that your device is working properly.

Windows (XP & Vista)
Download and install MIDI-OX 7.0 from www.midiox.com.  With the Midisport Uno connected to your computer and MIDI keyboard, launch MIDI-OX, go to Options>MIDI Devices and select it for MIDI Input*; and then click OK.  If working properly, pressing keys on your MIDI keyboard should register corresponding Note On and Note Off messages in the Monitor Window.  If you receive other messages such as pitch bend, program change (PC), System Exclusive (SysEx), or MIDI notes other than the ones you played, contact your dealer or the original place of purchase to return the device.

* Windows XP users may see USB Audio Device when using the class-compliant driver.  If the device does not appear, exit MIDI-OX and connect to a different USB port.

Mac OS X
Download and install MIDI Monitor from www.snoize.com/midimonitor.  With the Midisport Uno connected to your computer and MIDI keyboard, launch MIDI Monitor.  If working properly, pressing keys on your MIDI keyboard should register corresponding Note On and Note Off messages in the Monitor Window.  If you receive other messages such as pitch bend, program change (PC), System Exclusive (SysEx), or MIDI notes other than the ones you played, contact your dealer or the original place of purchase to return the device.


Note:
M-Audio has identified a defect in a manufacturing run of its popular MIDISPORT UNO 1x1 MIDI interfaces. The defect affects only the MIDI input and causes the MIDISPORT Uno to distort incoming MIDI data resulting in random notes, inaccurate note on/off messages, as well as pitch bend.

The following Serial Number range of USB MIDISPORT Uno’s is affected:

From:  S/N 31805709001  To:  S/N 45805704080

The important Numbers to reference are the first 3 digits. The third digit MUST be an eight. So we’re looking for numbers 318, 328, 338, 348, 358 etc up to 458. What are the FIRST 3 digits of your SN?

Please check for the Serial Number located on the bottom of the shell pack, next to the Bar Code; or if the packaging has been discarded the Serial Number is also located on the bottom of the actual UNO device.

If you have identified a Serial Number within this range of MIDISPORT UNO product please contact your dealer or the original place of purchase to return the device.  M-Audio has requested that dealers extend their return policy to any customer who has purchased a defective product within this Serial Number range

Please note that until recently, MIDISPORT Uno’s did not have Serial Numbers.  If your MIDISPORT Uno does not have a Serial Number, or if your Serial Number is outside of the range listed above, your unit is not affected by this defect.