DIATEC Filco Majestouch N-key rollover Brown Switch Keyboard Review
 

The DIATEC Filco Majestouch is definitely not your average LAN gaming keyboard, but more for home office/gaming purposes. Typing on it is a real pleasure, thanks to the Cherry MX Brown switches it incorporates and it is also very durable.

http://www.madshrimps.be/articles/article/1000091

First time I see an USB to PS/2 converter actually recommended over native USB :)
PS/2 does still have some advantage over USB it seems, too bad many if not almost all motherboards are now shipping without PS/2.

Never had keyboard init delays at POST using PS/2. Some keyboards take longer to initialize and it is almost impossible sometimes to enter BIOS.

ramming the DEL key is a known habit of OCers to get into the BIOS ;)

Other useful information:

Seems USB limits the NKRO:

"USB limits the rollover to 6 keys plus certain modifiers: Shift, CTRL, ALT, WIN. Other non-ALPHA keys such as Spacebar, CapsLock, TAB and Menu will limit key recognition to 5. This is commonly referred to as the 6+4 USB Limitation. "

source: http://geekhack.org/showwiki.php?tit...gy+and+Results

NKRO feature is fully supported on PS/2:

"Filco Majestouch FKBN104M/EB (n-key rollover model)
Interface: PS/2
OS: Ubuntu 7.10
Keys: more than I can press :)

I tested the key combos I listed above: QW-AS, QWE-ASD, QWER-ASDF, etc. It passed all of them, at least until I ran out of fingers (up to 20 keys, pressing 2 keys at once with each finger)."

source: http://geekhack.org/showpost.php?p=59495&postcount=23