DetailsPro Cable a Flexible Data Protection and Performance Enhancement Solution for Mac Pro. Pro Cable Gives the Freedom and Total control to Mac Pro owners to select third party fast SAS/SATA Host Adapter of there choice. Pro Cable connects third party RAID Controllers to 3.5 inch SAS/SATA Hard Disk Drives of Mac Pro drive bays. Pro Cable - is a must have accessory in any high volume production setup. Power users need drives ready for easy exchange and replacement. Pro Cable gives the capability of unlimited Hot Swappable drives for your Mac Pro. Drives can be assigned and labeled for different clients, projects or backup. With Unique Hot Swap* feature Drives can be mounted and unmounted in Running machines. A true convenience and improvement for the power users. Quick and Easy installation. Requires: Mac Pro with one open PCIe Slot. SAS/SATA host adapter. All drive bays must be open** *Hot Swap feature depends on Host adapter. If host adapter does not have hot swap feature, drives can not be mounted or unmounted while machine is on. ** All (four) drive bays of Mac Pro must be open. To boot the machine install a boot drive in second bay of Optical drive carrier by using Pro Caddy.