this is a usb-midi interface for the nintendo game boy DMG console. it can be used to send and receive MIDI data and clock sync signals to and from a DMG game boy and your favorite music software. the unit measures 1.75" x 1.1" wide by 0.75" tall.
check out the setup and basic user guide here.
for all modes and functions please read through this cribsheet.
these have matte black PCBs. for a white version check out thursday customs.