Mac Minis are already pretty decent machines. By adding graphics cards and fast storage drives, you can do more on them. ANIMAIONIC is a docking station with space for two graphics cards and 4 SSD drives. It also has a built-in SD card reader.
ANIMAIONIC adds two PCIe extension slots to your Mac Mini. It has 4 x M.2 slots for up to 8TB storage space. It also has all the ports you need (Ethernet, USB-C, HDMI, 2x USB, jack audio). The aluminum box visually matches a Mac Mini design.[where to get it]