The DRW150SASBK lets you quickly hot swap SAS & SATA hard drives without having to power down your computer. With a 25K Insertion Rating, it's the ultimate solution for RAID implementations, multi-boot OS configurations, & high-speed, high capacity backups in mission critical PCs or servers. The DRW150SASBK offers a compact, light-weight aluminum design, maximizing heat dissipation, while helping to keep the hard drive & valuable data safe from damage while in transit.