Mounting bracket for allowing you to mount up to 4x 2.5" HDD or SSD drives on the bottom of the chassis. Can be combined with HDD or AIO bottom bracket.
Red Barn Cyclops 2U 4-Way HPC Server – 4 x GPU – Ice Lake – Red Barn HPC
OEM For Asus GTX 1050TI 1050 1060,RX580 EX-RX570-O4G Series Graphic Card I/O Shield BackPlate Blende Bracket - AliExpress
Density.sk - No need to worry about storage expansion
how small is too small - Custom Loop and Exotic Cooling - Linus Tech Tips
In Win A3 Review
What's your latest tech purchase?, Page 311
2.5 to 3.5 Adapter: Hard drive mounting kit supports installing a 2. 5” hard Drive into a 3. 5” internal Hard Drive slot. The mounting fit all 2. 5”
2.5 to 3.5 Hard Drive Adapter, SNANSHI SSD Mounting Bracket SSD HDD Metal Mounting Bracket 2.5 to 3.5 Adapter for PC SSD (Pack of 2)
SSD Brackets - Sabrent
Inateck SSD Mounting Bracket 2 packs, 2.5 Inch HDD/SSD to 3.5 Inch Internal Hard Disk Drive Mounting Kit Bracket SA04004 – Inateck Official