question about nkey rollover

[r3xx3r]

This may be a dumb question, but I was wondering if the keyboard has to support nkey rollover for it to work, or if I plug in a keyboard that says it has an Anti-Ghosting zone near the WASD keys (the Azio Levetron Mech5) with a ps/2 adapter if nkey rollover works automatically? if nkr has to be a feature of the keyboard does any1 know why that would need to be and why more companies dont implement it?

[TheKDub]

[TheRunningOtaku]

This may be a dumb question, but I was wondering if the keyboard has to support nkey rollover for it to work, or if I plug in a keyboard that says it has an Anti-Ghosting zone near the WASD keys (the Azio Levetron Mech5) with a ps/2 adapter if nkey rollover works automatically? if nkr has to be a feature of the keyboard does any1 know why that would need to be and why more companies dont implement it?

The video above has a great explanation

Basically N-key rollover is supported by the keyboard, and it depends no the keyboard whether it is support over PS/2, USB or both. N-key rollover should work automatically, and it's best to use a PS/2 port if it comes with the keyboard simply because you don't take up an extra USB port,and you won't have any driver problems whatsoever if you need to go into your BIOS or something.

Honestly though n-key rollover is something that isn't realistically important - I can't see a situation where most gamers/typists are gonna have to press more than 6 keys on their keyboard at once, and it's more of a 'nice to have' feature rather than a 'must have' unless you're using your keyboard as a piano or something like that.