The cases are finally completed, alas not in the typical Epson-non-white, but a kind of beige (Devil's Design, PETG). The PX-4 version is Ok, but the PX-8 case (and actually the board) are less optimal. It is too wide and partially obscures the RS-232c port and the BCR port. Nothing that a board and case redesign can't fix, but one case for both the PX-4 and PX-8 was worth the try. The circuit is the same, only the bus pin-out differs.