Designed for media professionals, content creators, and small businesses running Apple Final Cut Pro, Adobe Lightroom, and other I/O intensive applications, or even those who just need to back up terabytes of data, the 5D3 5-Bay Thunderbolt 3 Enclosure from Drobo is equipped with five 3.5" SATA drive bays that support SATA III 6 Gb/s and SATA II 3 Gb/s drives. The 5D3 distinguishes itself from the original Drobo 5D and 5Dt through the inclusion of Thunderbolt 3 technology, which is accessed through two integrated Thunderbolt 3 ports. While one of the Thunderbolt 3 ports is used to connect the 5D3 to your compatible system, the second one is used to daisy-chain up to six Thunderbolt devices together, including one 5K display or two 4K displays. The Thunderbolt 3 ports also provide 15W of charging power for Thunderbolt 3 laptops, and there is also one USB 3.0 Type-C port, which transfers data at speeds up to 5 Gb/s. Please be aware that the 5D3's Thunderbolt 3 ports are only compatible with Mac, while the USB 3.0 Type-C port can be used with both Windows and Mac. Mac support includes APFS/macOS High Sierra.