The 16TB Flex 1U4 4-Bay Thunderbolt 3 Storage Array from OWC / Other World Computing is a flexible storage, docking, and PCIe expansion solution for rackmount use. Compatible with macOS 10.15, 11.x, and 12.x, the Flex 1U4 features a storage capacity of 16TB, which is split between 4 x 4TB NVMe 2.5" U.2 SSDs. Connectivity to your host system is established using a 40 Gb/s Thunderbolt 3 port, which supports data transfers at up to 5000 MB/s. Daisy-chain five additional devices or add a second display to a second Thunderbolt 3 port, while two 10 Gb/s USB-C, three 10 Gb/s USB-A ports, and one DisplayPort 1.4 port provide additional connectivity options. Further expansion, such as audio/video capture cards, 10Gb Ethernet, SSD storage, a hardware RAID, or other I/O card can be realized using the PCIe 3.0 x16/x4 slot.