Question about GTCO SP400-USB12 CalComp InterWrite SchoolPad 400 - Digitizer - 8 x 6 in - electromagnetic - wireless

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Interwrite schoolpad 400

I have to keep it plugged in or it will lose charge. The battery light keeps flashing and the pen is shaky when you write with it. What is wrong?

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  • Airock Apr 20, 2008

    I have an Interwrite School Pad 400 and the pen, apparently, is not charging. When the School Pad is plugged in and in the "off" position, the pen light comes on, but when attempting to use the pen, there is no response from the pen on the tablet, even though the bluetooth connection has been made. Any ideas?



  • Anonymous Apr 27, 2008

    I have the same problem too....when I contacted tech support they told me that the pen was not charged. So now when I charge the tablet, I try to make sure the pen light stays on.....I have to wiggle the pen around until it is in good enough to keep charging. It seems like the pen holder is not tight enough to hold the pen to charge it. Even when I do get it charged, it doesn't last 40 hours.

    Very frustrating.



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Posted on Jan 02, 2017


SOURCE: I am trying to find

Go to and select a link to Interwrite products.

Interwrite was bought by Einstruction tthree years ago and they have all the drivers.

Posted on Mar 10, 2011


SOURCE: I am trying to find

GTCO was bought out by Einstruction in 2007, they may have the drivers for this product.

Try or go to also.

Posted on Jul 19, 2011

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