Just set your Mac Mini M4 right on top. Flip it around, unscrew the back — slide in an M.2 SSD, takes like ten seconds. Here's what you're working with — 4K HDMI, USB ports, SD card slot, headphone jack. Plug in your keyboard and mouse. Pop in an SD card or a USB drive. Watch your files move — quick and painless. Clean desk, hidden storage, no drama. That's the dock.