Yes, you can reuse the Windows key during a clean installation if prompted.
Yes, you can reuse the Windows key during a clean installation if prompted.
I’m going to install Clean Windows on an SSD using the ISO file instead of the USB setup. The creation tool didn’t work with the USB option, so I’ll proceed with the ISO. If it prompts for a key, I’ve saved mine and should be able to use it again.
You're allowed to use the license as long as it's not an OEM and there are no restrictions on quantity (one copy per time). With the updated keys, Microsoft may need to connect to your online account if major hardware changes occur (I only received this via a Mobo update). Otherwise, everything should function properly.
One unit at a time? Just keep it in mind if Windows is running on your HDD and you install it on an SSD—it might affect how they’re treated as a PC.