What is this adapter used for?

I have a box of unknown adapters.
I'm trying to throw away, the ones that specifically go, to a specific, device.
A device that I do not own.

If this adapter could go to multiple devices, I'll just keep it.

Yes it can, provided that you check for matching volts and watts etc.  the device, printer or whatever, will have a little sticker usually near the power plug indicating that information.  if that matches and the part that fits into the device matches, you are good.  

Radio shack makes a living selling these adaptars, calling them universal, to replace ones people have lost.

So  it could be a printer, laptop, scanner, etc?

yes.  the switching part looked a little small for a laptop, but who knows.  as far as printer, scanner, fax machine, switch, etc.  it could work.

thanks.

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