My HP MicroServer has long had a free, lonely and abandoned SATA port that could easily fit a 2.5 inch SSD or HDD. I finally got it done.
Parts list:
00:20 - Delock Power cable SATA to Floppy 4 pin (15 cm)
00:50 - Delock Straight/Straight Metal Red SATA cable (50 cm)
01:25 - The SSD
02:37 - First boot iLO