This is a case for the new 1541 Ultimate II+ tape adapter that can be purchased along with Gideon's new 1541 Ultimate II+. This case is for the v3.4 tape adapter board. This revision is listed on the top of the device's circuit board.
This case features full access to the USB connector on the back side as well as to the cassette port pass through on the back right of the device. It fits comfortably in the back of your Commodore computer without interfering with any other peripherals that you may have plugged in.
This case is designed for use with brass M2 heatsets and screws. They can be purchased separately from http://www.corei64.com/store or carefully install your own screws to close up the case around your new tape adapter.