Digispark Driver Update: I just tried to upload a ATTiny 85 sketch using the USB port on my Dell Laptop without the USB Powered hub. It WILL not work. For some reason the Laptop does not recognize the laptop's USB. it uploads the sketch just fine using the HUB. SO, if you are having problems then using a Powered Hub may be the answer. Attached is a sketch I wrote to use more memory than the simple Blink sketch as to check the AT85. Use it if you wish.TINY85_Blink_Blink_SOS.ino (6.4 KB)