Ultra-Speed SSD Enclosure: It supports storage expansion using M.2 NVMe SSD drives up to 8TB capacity and 40Gbps speed via the Thunderbolt 5 port on the back of Mac Mini M4/M4 Pro. It is also compatible with Thunderbolt 4 and USB4 ports. Multiport USB Hub: It features with two USB3.2 Type-C 10Gbps, one USB3.2 Type-A 10Gbps, two USB2.0 data ports and TF/SD 4.0 card readers up to 312MB/s. It also includes a 3.5mm audio-out port for headphones and speakers.