Dan Ackerman/CNET

This add-on dock slides right over the foot of a 24-inch iMac. It includes USB-A and USB-C ports, plus slots for both microSD and SD cards and even an internal slot for an M.2 storage drive. The 11-inch wide dock also has the exact footprint as the iMac’s color-matched keyboard, so that can sit on top of the dock/foot combo when not being used. At $150, it’s a little on the pricey side, and there are no HDMI or DisplayPort outputs. But if you’re looking for a tidy solution to add some extra ports to an iMac, this is a sweet solution.