This is a data switch (also called an A-B switch). When I had 2 printers I used this so I could print to either one by selecting either the A or B arrow - really worked neet. But now that I only have 1 printer, this is surplus to my needs. This also was $60+ new. This can be yours for $5 shipped (that's $2 + $3 shipping cost). Post here or email me if you are interested. Thanks.

Esther