This Mac Mini M4 docking station adds seven ports - and up to 8TB storage - to Apple's gorgeous mini PC, but I am not sure why it has 3, yes 3, memory card readers
RayCue's dock for the Mac mini adds seven ports, supports up to 8TB SSD storage, and offers versatile connectivity options.
PC Magazine5y
memory card reader
First available as external devices for one type of card, readers were subsequently built into the computer to handle all popular formats. Also known as a "memory card reader/writer," "flash ...