Umm ... no. That 5V you're planning on pulling from the NUC comes from the USB port, yes? The NUC is not a phone charger, it's not designed to power things from the USB port, it's designed to send data out the USB port. The proper way to run things is have the guide camera/ future EAF plug into a powered USB hub which *then* plugs into the NUC USB port ...
Not my experience. My guide cameras (I've used 3) take very little power, all work perfectly when plugged into the USB port of the NUC. _Through_ the _unpowered_ USB hub of my CEM60.
It. Just. Works.
The new EAF requires a bit more power, but is designed to work off normal USB port power.
"What is the amperage required for the 5v EAF?" Support@ZWO – March 29, 2021:
A few hundred mA.
Bottom line. These things take very little power to run, you do not need a powered USB hub. A NUC has a lot of USB ports (so no hub is needed). Each good for at least 500 mA, per the USB standards. My NUC has 4 Type A ports (could be main camera, guide camera, focuser, filter wheel), 2 Type C ports (if your devices use these, power is abundant, much more than 500 mA). If you have a ZWO main camera, it provides 2 more USB ports (also good for 500 mA each).
My main camera and focuser also take 12V power. That's provided on the mount. My ZWO filter wheel takes 140 mA, runs off USB, no additional power needed.
The idea of the iOptron NUC option was brilliant. Excellent cable management with no hub needed for most people. NUCs are more expensive than other mini-PCs, which is really the only drawback.
If you can/will use a NUC as your telescope computer, these really are high end mounts, so far as cable management is concerned.
Edited by bobzeq25, 24 May 2022 - 01:32 PM.