StarTech.com 5.25in Trayless Hot Swap Mobile Rack for 3.5in SATA HDD with LCD & Fan - SATA mobile Rack Back Plane - Hot Swap bay A built-in, backlit LCD display enables monitoring the condition of the hard drive and cooling fan even in poorly lit areas Maximize performance, with file transfer speeds up to 6Gbps when paired with SATA III HDD and controller Audible warnings and customizable warning thresholds to suit almost any operating scenario, to ensure optimum drive performance A 40mm cooling fan and enclosed design allows for optimal cooling Built-in backlit LCD display shows hard drive and fan status (temperature, fan speed, up-time, etc.) Audible warning buzzers for temperature and fan failure Trayless design: hard drives are not mounted into separate trays/enclosures Flammability rating of UL 94 V-0 A built-in, backlit LCD display enables monitoring the condition of the hard drive and cooling fan even in poorly lit areas Audible warnings and customizable warning thresholds to suit almost any operating scenario, to ensure optimum drive performance A 40mm cooling fan and enclosed design allows for optimal cooling Built-in backlit LCD display shows hard drive and fan status (temperature, fan speed, up-time, etc.) Audible warning buzzers for temperature and fan failure Trayless design: hard drives are not mounted into separate trays/enclosures Flammability rating of UL 94 V-0 40mm cooling fan