USB / PS2?

I'm on the verge of buying a new system, and I've noticed newer keyboards and mice offer both types of connection. Other than the phasing-out of PS2 ports, does USB offer any kind of advantage over PS2 for these connections? Thanks.

hmm.. just a comment.. not sure how true is this... but i noticed that PS/2 is smoother than USB on my system. sometimes when the precessor and system is loading a lot of stuff(probably leading to heavy I/Os) the USB tend to lag or not respond until the loading has decreased. But i don't notice any such thing when using PS/2.

it could just because my system is a laptop. *shrugs*

any experts care to dispel this?

IMO USB is more likely to experience lag under heavy system usage than PS/2, probably because many configurations share the IRQ for USB with another device.

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There are several reasons, like the ability to connect several devices (like, say, a mouse and a handheld trackball for presentations, or a fullsized keyboard and a small portable for the couch), the fact that some laptops don't have a PS/2 port, or the fact that companies are trying to phase out PS/2 to cut design/manufacturing cost of boards/chipsets.

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The biggest problem I've seen with USB is laggy performance when the IRQ is shared. If they REALLY wanted to get rid of PS/2, they should give IRQ1 to the USB controller instead of the keyboard controller, and use IRQ12 for another onboard device.

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