Unfortunately many manufactures are no longer supporting the PS2 ports.
Personally, I prefer a wired mouse... a lot harder to loose it. As far as the wired keyboard, it doesn't seem to make much difference. Recently I tried a wireless keyboard. Perhaps I had the broadcast dongle in the wrong place, but it would periodically pause, a big pain.
Many of the functions like "dragging", or moving, can be configured using your control panel.