I've got an old KVM switch: 4 ports, VGA monitor, PS/2 keyboard and mouse. Works pretty good. Except:
This newfangled monitor I've got, that's maybe three years old and not exactly top of the line even then... if you speak VGA to it, the image quality is decidedly inferior. Even with a short cable. Being as how I use it for CAD, and every pixel counts, I use the DVI connection. (I tried using HDMI, but apparently this monitor reports inappropriate resolution data or some such, and the X server would come up in a bad configuration. Or maybe it was Windows that didn't work with the HDMI connection. One of those.)
Anyway! Having at last eliminated the last of the VGA-and-PS/2-only computers from the datacenter, and especially in light of the new workstation not really playing nice with PS/2, I'm kind of interested in replacing the KVM switch.
Thing is: the 4-port KVM switches that are on the market? The ones that don't cost, like, plural hundreds of dollars?
All VGA. Most of 'em are still PS/2, even; where's the market for such things?
Really, now: is everyone who needs a KVM switch either still in the VGA age or on a megacorp budget?
I'm almost tempted to build my own. It'd cost a fair bit more than buying one... but if I built a dozen, they'd come out a bunch cheaper, and maybe there would be a market for a, say, $100 four-port DVI-and-USB KVM switch?
But, apart from the basic hardware design (which is almost trivial), there's the hassle of making the USB keyboard & mouse bits play nice with keyboards, mice, and computers, all from sundry vendors. Presumably the companies that are peddling the VGA+USB products already have this.
So, being insufficiently motivated to float this on Kickstarter (and having more interesting things to do, besides), I rant and having ranted move on.
(Yeah, I just checked Newegg. Cheapest thing in the category is $165. Gets mostly favorable reviews... but apparently refuses to stay connected to the computer that you're rebooting, if another computer is active.)