So it would appear that the one I have has had a software or firmware update based on the revision number

The yellow monitors appeared to be manufactured in the later part of 2013 with a revision number of

For anything else like the case, stand or software change they add another digit to the revision number

So, what you have to do is compare the revision number to the date of manufacture to be meaningful

I received one with a date of manufacture of March 2014 and a revision number of A01

Product as described and v happy with it

The 24"s bring so much to the table and I love 16:10

Will update with negative s only, but don't expect this to be necessary.

Returning them and getting the correct U replacements was straightforward, although cumbersome (this was an order of 14 monitors, so could have been worse).

If I had it to do over, I would still buy one of these again and recommend the U2412M to others looking for a reasonably priced monitor with great performance.

This is revealing, since when emursing myself in reviews for monitors, I started to feel like the 2412M would be a 'compromise'

I'm not a techie, but I did need a big screen for work, researched what was out there thoroughly, took it all in, and landed on the Dell Ultra Sharp U2412M 24-inch

Overall, I highly recommend the U2412M as its the best bang for your buck for an IPS monitor in the $300 range.

We have developers and support staff using them and they love the U2412M.