Wabbit Wanch Design

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...

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...

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...

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.

Direct link to the URL:

http://www.m-audio.com/index.php?do=support.faq&ID=5f6baafd6de1313d0541d78b021b2da1

And

http://forums.m-audio.com/showthread.php?t=7865

The current revisions of the Midisport Uno USB and Midisport 1x1 devices are class-compliant (plug and play) on Windows XP, Windows Vista, Windows 7, and Mac OS X. These current revisions can be used without installing any additional drivers. The older hardware revisions are not plug and play and will not work without installing drivers. This guide will show you how to identify which version you have.

For anyone reading this, here at the Wanch we use the Version 1 (clear body, circled component on the top) and it works with the drivers and Snow Leopard perfectly.

Midisport Uno 1x1

The plug-and-play Midisport Uno USB can be identified by looking through the clear-blue plastic cover to examine the location of a certain component on the chipset underneath. Note the location of the circled component. If this component appears below the M-Audio Logo, the device is class-compliant and can be used without installing any additional drivers:

Current Rev (Version 2)



The earlier versions of the Uno came in two different body styles, a non-transparent (opaque) plastic body, and later a transparent dark-blue plastic body. These versions of the Uno are based on Series 1 MIDI architecture and will not work without installing drivers:

Version 1 Uno (original)



Version 1 Uno (clear blue body – note the location of the circled component)