With the Raspberry Pi 3 mounted into the super-slim case, the modder filled the empty void with three Micro USB breakout boards that are soldered and wired directly to the main board.

This Sabrent OTG card reader is no bigger than a standard USB flash drive. One end has a USB 3.0 Type-C port and the other end has a USB 3.0 Type A port. Both sides include caps so they're ...