StarTech.com 4 Bay Aluminum Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD - Connect and hot swap four 3.5in SATA III or SAS II hard drives to your computer system in three 5.25 bays, with support for SATA 6 Gbps

Trayless design for easier hot swapping","Support for SAS revision I/II (3.0/6.0 Gbps)","Installs in three 5.25" drive bays","Key lock design","Power and Activity LEDs for each drive","Built-in fan","UL94 - V0 flammability rating","4 drive bay design","Support for SATA revision I/II/III (1.5/3.0/6.0 Gbps)","Solid aluminum construction

• Trayless design for easier hot swapping
• Support for SAS revision I/II (3.0/6.0 Gbps)
• Installs in three 5.25" drive bays
• Key lock design
• Power and Activity LEDs for each drive
• Built-in fan
• UL94 - V0 flammability rating
• 4 drive bay design
• Support for SATA revision I/II/III (1.5/3.0/6.0 Gbps)
• Solid aluminum construction