Well, I'll give an example. I have a KVM with DVI. Its output is 2 DVI male. On my workstation it works (on DVI female), but I'll need a DVI male -> VGA female in order for it to work on my laptop. My graphics card came with VGA male -> DVI female which is exactly the other way around (it is what you'd need though). I haven't searched around yet on local stores, but I did see it on eBay.