Touchscreen over Ethernet (with video?)

I've got touchscreen which has a VGA output and a USB (or alternatively, serial) connection which acts like a mouse (for the resistive touch part).

I've got Cat5E cabling in my house, and would like to run this screen remotely in my living room connected only to some sort of KVM switch, driven by a computer upstairs in a different room across the Cat5E ethernet cabling, i.e.:

+--------+        +-------+                            +--------+          +------+
| Touch  +--USB---+ Magic +--Ethernet--||  ...  ||-----+ Magic  +---USB----+  PC  |
| Screen |        | Device|                            | Device +---VGA----+      |
|        +--VGA---+-------+                            +--------+          +------+
+---+----+                                                             
    |
   Power

Is this possible to do? What is the the "magic device" I need - an IPKVM? I don't want to spend too much. (I could buy a new PC for $200!) I'm quite happy to get my hands dirty with some hardware hacking if necessary.

If it is possible, is it realistic to display (non-HD) video over this link?

Thanks!

EDIT: noticed the screen can take serial (RS-323) instead of USB if that helps.

Answer

You'll find VGA extenders and USB extenders using Cat5e cabling. But it's not cheap and might go above your $200 limit. Not sure you can combine both on 1 Cat5e cable though.

If you don't mind hacking it yourself, Instructables has many tutorials for building your own cables, like the 5++ in 1 Multi Cable, or Make your own VGA cord of CAT5 cable! for instance.

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