Amazon.com: 5.25'' to 3.5''/ 2.5'' Bay Adapter 5.25" FloppyDrive to Dual 2.5 x 3.5 HDD/SSD Bay Cover Computer Mounting Bracket Kit Supports 7mm 15mm 2.5inch HDD for PC. : Electronics
Evercool HD Bracket Bay HDB-25 – Coolerguys
Evercool HD-AR-RBK HDD Cooling Box for Three 3.5 HDD or Four 2.5 HDD - Newegg.com