I have an ST-i guider that used to work and just stopped working last week (I don't know how long it has been since actually used for imaging, but at least before last week it would attach to USB and show up in the Device Manager). Anyhow, when connected, Windows 10 does not recognize it and it shows up as "Unknown device". The current drivers are installed and in fact another SBIG camera works fine on the same PC. I tried it on my laptop (after installing camera drivers) and the same thing happens. I tried it on the old observatory pc (still on, but used for an all sky cam), and it connected but identified it as an "ATIK USB 2.0 Chromicamera" (I have ATIK drivers on that pc for the all sky cam). This makes me think somehow the USB Vendor ID became scrambled. Any thoughts on this? --- Dave, Director, Burke-Gaffney Obs.