It performs well enough for MSFS, but my only issue is the SSD fills up very quickly. I’ve already uninstalled everything else off the computer that I’m comfortable uninstalling. So my question is, can I add an additional hard drive?
Isn’t really the same like the vendor speaking … but at least someone seems to have managed to install a second NVME M.2 drive in that slot. So it seems to be long enough, free and capable of taking an NVME (opposed to a SATA only M.2 drive).
So i would say: if you feel comfortable opening the case (be careful with those ribbon cables mentioned), go for it.
The manufacturer makes a manual, that manual should show you a cutaway of the inside of the unit and what additional slots are available for expansion for HDD’s. Additionally, you can use a external SSD/HDD drive using the USB ports, but the speed may not be enough to provide adequate data transfer rates which will make you happy. You can also just get a larger primary drive I have found 1TB is large enough for C for everything I put on my PC.