Summary: Looking around, I couldn't find any budget KVM switches that didn't have some kind of issue with Windows 7. This one is no exception, defaults to low screen resolution for Windows 7. XP, Vista, and Windows Server 2003, all work really well, speakers, mic, video keyboard all flawless switching and booting.
Summary: No problem whatsoever. I use it for 3 PCs (one of them Dell OptiPlex with USB only where PS2 inputs - for keyboard and mouse - are not available). If you have situation like that - try using first the PS2-to-USB adaptor by Lynkskey, e. g. the same manufacturer as the KVM switch's one. The Linkskey to-USB adaptor is USB HID compliant and works properly with native Linkskey KVM switch.
Summary: Arrived quickly after it was ordered. Works as described. The hotkeys are nice; you can configure them with a lot of variation. I don't use the audio, but it's nice to know that it's there if I need it. I would definitely recommend this item.