I have purchased a couple of different types of DigiSpark Attiny85 clones (couldn't find originals available) and they have worked great except some devices (so far, just laptops) don't see the device AT ALL.
It's not that they don't recognise it and so is a driver issue - there is nothing to apply the driver to, no indication that the thing is even plugged in other than the light comes on (so I know it has power).
More frustratingly, if I plug the Digisparks in to any problematic device via a docking station, USB hub, etc. everything works as expected (confirming the drivers are ok) and I can write scripts to the digispark.
I've tried updating the Nucleous bootloader but the problem persists. I get this problem on three modern laptops (HP & 2 Dells) but my older Lenovo laptops have no problems. Not sure if here is an issue with modern USB controllers?
UPDATE: Everything points towards it just being an issue with Digispark's and some USB 3.0 controllers. The clock is correctly set at 16.5Mhz so not sure what else to do other than write these-off as a reliable device.
Anyone had any experience of this or have any suggestions?