I have two strange USB problems here:
- I have 2 PCs with integrated USB controllers (VIA chipset) that do not start up my application. The device manager of Win2k recognizes the XEM3001.v2 correctly, but my program does not start up correctly. Other PCs (using Intel USB chips) work fine!
- One of the XEM3001.20050215 is not recognized by the 2 VIA-PCs properly (the other XEM3001 are ok). I see a yellow ! in the device manager. The Intel- PCs say it works fine!
Could there be a problem with some - not all! - VIA USB chipsets, that even differ from board to board? I allways use the latest driver version (from 26. Dec 2005). Most of my PCs use USB1.1 as speed is not restrictive for me. I already connected the XEM3001 modules using a powered USB hub (+5V/2A) assuring to have enough power all the time.