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New 631 unit - failing to power up


New member
I received my new 631 usb LCD the other day. Even with multiple attempts I have been unable to get anything out of it. It appears like it is receiving no power. I even removed the usb connectors and directly placed them on the USB pins but still dead as a dodo. Also, my XP system doesn't acknowledge anythings there. Please help
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CF Tech

How sure are you of your motherboard connections?

If power and ground are switched - - - this is bad (smoke).

Having D+ and D- switched could cause your problem.

You can always call in and talk to support.


New member
Have you installed the drivers?

I had to install the drivers first and reboot before the unit powered up.

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USB LCD Displays - Graphic and Character LCDs with a Keypad