I successfully added a PCIe SSD (purchased from eBay) to my 2014 Mini (which had 1TB HDD) by purchasing the SSD cable from aliexpress. Disk Utility offered to create a Fusion drive out of it--was super easy! My OCD is bugging me though because I put it all back together without the extra screws that are normally there to fasten down the SSD and the SSD Cable plug (as shown in steps 10 and 13 of this article: https://www.ifixit.com/Guide/Mac+Mini+Late+2014+SSD+Replacement/32646). Specifically it mentions: Qty 1 5mm T5 screw to hold down the SSD board Qty 2 2.6mm T6 screws to hold down the SSD cable bracket I would really like to obtain these screws and properly finish the job. But I'm not really sure of the best way to obtain them (preferably without spending a ton of money). Anyone been in this (or similar) situation before? I figure I'm not going to find these at the local hardware store. Thanks for any ideas.