How to add a NVMe SSD to a 2014 Mac mini - Quick and Easy! - YouTube
Apple Mac Mini 2014 (A1347) Upgrade and install SSD or Hard Drive replacement - YouTube
Mac mini Late 2014 Hard Drive Replacement - iFixit Repair Guide
Mac mini iFixit teardown reveals mixed news for repair/upgrade - 9to5Mac
Amazon.com: iFixit Upper SATA Cable Compatible with Mac Mini A1347 (Mid 2011 - Late 2014) : Electronics
Mac mini Late 2014 SSD Replacement - iFixit Repair Guide
Amazon.com: Sintech M.2 NGFF NVMe SSD Card for Upgrade Mac Mini Late 2014 Year A1347 MEG Series(Only for late 2014 Year,not fit Other year) : Electronics