Picked This Up At An Auction

I Don't Know Anything About These, Plugged It Into A Windows 7 Computer.  It Works Fine Except I Can't Get The Pen To Work.

I Don't Know If It's The Battery, Tip, Software? 

        So Selling It As Is, Parts or Repair.

It Is Model 10707, 19" Pen Tablet Monitor.  Both Windows and Mac.

See Pictures For Condition and What You Get

s/n 1070713121072

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Get both convenience and accuracy in your graphics applications using this 19-inch Interactive Pen Display from Monoprice. This monitor combines the functions of a drawing tablet and a monitor into a single package. The display features a 1440x900 maximum resolution and a 0.3mm dot pitch. It can display up to 16.7 million colors and has a viewing angle of 160 in the horizontal and 140 vertically. The monitor includes a light weight, rechargeable pen-stylus, a pen holder, and replacement pen tips. The monitor features a pointing accuracy of 3mm, when tilted to a 50 angle, 5080 lines per inch resolution, and 2048 levels of pressure sensitivity. It uses a USB interface for charging and has a report rate of 200 RPS. The monitor is compatible with Windows 8.1 and Mac OS X Mavericks. It is also compatible with earlier operating systems. When used with a Mac, the monitor can be used as part of an extended desktop, multi-monitor setup.