634 USB Display»»»HELP


New member

I bought a 634 USB Display but i have some problems.
I installed the USB driver successfully but where it appears the Virtual COM port? I don't see where is it
What is device manager? Any software?

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USB LCD Displays - Graphic and Character LCDs with a Keypad

CF Support

Go to your desktop.

Right-click on 'My Computer'
select properties
click on the 'Hardware' tab
click on the 'Device Manager' button.
Look for 'Ports (COM & LPT)
expand it
Look for Crystalfontz 634-USB (COM 'x')

Where it has it assigned is the com port that you'll use to talk to the LCD with the software of your choice.