You can use a 2.5" SATA/SSD drive for HP servers(GEN8/GEN9) that come with 3.5" (651314-001)hotswap drive cage.
You'll receive: 1 x 651314-001 HDD Tray Caddies 1 x 654540-001 HDD Tray Caddies 8 Caddy Mounting Screws
Description
Compatble With:
For HP Proliant Gen8/Gen9 servers:
For HP ProLiant DL 380E G8/Gen9
For HP ProLiant BL420c G8/Gen9
For HP ProLiant DL 388 G8/Gen9
For HP ProLiant BL460c G8/Gen9
For HP ProLiant DL 560 G8/Gen9
For HP ProLiant BL465c G8/Gen9
For HP ProLiant DL160G8/Gen9
For HP ProLiant BL 660c G8/Gen9
For HP ProLiant DL320EG8/Gen9
For HP ProLiant ML310EG8/Gen9
For HP ProLiant DL360EG8/Gen9
For HP ProLiant ML350EG8/Gen9
For HP ProLiant DL360PG8/Gen9
For HP ProLiant ML350PG8/Gen9
For HP ProLiant DL380PG8/Gen9
For HP ProLiant SL230SG8/Gen9
For HP ProLiant DL385PG8/Gen9
For HP ProLiant SL250SG8/Gen9
For HP ProLiant WS460CG8/Gen9
You'll receive: 1 x 651314-001
HDD Tray Caddies
1 x654540-001 HDD Tray Caddies 8 Caddy Mounting Screws