Asking $50 shipped thats where you can find out more info about it.
I've heard it doesn't work well with the EPIA

Also for sell a Track Ball Finger Mouse ($11 + $2.50 shipping).

Also a Dauphin Mini Keyboard, Very cool! (Missing Tab Key, otherwise in perfect shape and working order) $15 + 3.00 shipping. The Dauphin is a small 9.37"(L)x5.48"(W)x0.84"(H). 82 key PS2 keyboard. Great for server room or any computer area with limited work space. Used but tested good. good condition.