I have an EAf Focuser that I purchased 10 months ago. I also just purchased the ASI533MC Pro. I'm considering buying the updated EAF 5v version for my other scope but before I do that, I want the one I have fixed or replaced. The current EAF I have will no longer connect to a USB hub. It will not connect to the 2.0 hub on my camera either. It was working fine and then it wasn't. It will only connect directly to a usb port on my laptop defeating the purpose of my Cem60 mount that has a built in usb hub on the Dec assembly. I've tried different laptops and different programs that connect it such as NINA and APT. On the first attempt it will connect properly and then after about 5 minutes it will disconnect with an error and will no longer connect after that. Not even after restarting the laptop and software. Not acceptable.