Adopt cutting edge hard drive technology with Serial ATA and the SATABAY4 backplane unit from StarTech.com. Designed to hold up to four 3.5" Serial ATA hard drives, the SATABAY4 comes complete with a cooling fan to keep your drives running at optimal temperatures and two alarms (fan failure and overheating) to alert you in case of failure. Additionally, the frame and drawer design of the 5.25" full height (three bay slots) chassis can increase the number of drives that can be installed inside a case by 25%. Hot swap capabilities and data transfer rates of up to 150 MBytes/sec make the SATABAY4 a perfect upgrade for power users. Don't be left behind, make sure you get your hands on a Serial ATA backplane unit from StarTech.com and enjoy maximum performance.