Firstly, hello everyone! New member here

Secondly, I mentioned in passing to my boss recently an interest in getting an old IBM model M keyboard. He then told me that the company have a load of old legacy keyboards in the basement, and that I was free to have a look and take one home if they were any good.
I didn't find any IBM keyboards, however I did find a viglen dfk102ukaa04. Now google gives me little to no information on this, but from looking at
http://geekhack.org/showthread.php?6144-Any-info-about-this-Viglen and the wiki entry on alp switches as well as taking off one of the key covers I know it has white ALP switches (or white alp lookalikes, pretty sure they're mechanical though and not over a membrane) They don't have much resistance but make a nice little click sound when they're used and seem very solid. They look somewhat like this (rear of the key cover looks the same as well)
http://geekhack.org/attachment.php?attachmentid=23659&d=1312904982They keyboard itself isn't very heavy, it's not light but it's not the kind of weight I'd expect if there was a metal backplate on it. The top of the keyboard (above the function keys) extends by a good few inches if that helps with identification. It also has grills for a speaker at the back but there isn't one in place and doesn't look like one was removed.
No pictures I'm afraid, my lunch break is technically over so I can't get back to the basement to check again until the day is over. I know it has a DIN connector, would this be possible to upgrade to USB? More importantly, would it be worth upgrading this to USB?
I'm quite new to mechanical keyboards so any general advice on ALP switches, viglen keyboards and restoration is welcome.
Cheers for reading
