YAZSAKI JROK ZX Spectrum Keyboard Interface sleeve case

This is a sleeve type case for external Sinclair ZX Spectrum Keyboard Interface developed by JROK and published here http://www.jrok.com/project/speckey/spec_key.html

The case has main part and the cap which is tighten to the main part with single 2mm screw. You can add some glue to corners if the cap doesn't snap perfectly to the main part. The PCB has inside rails and FR-4 thickness should fit fine.

Please note that this interface doesn't fit without a bus expansion (e.g. http://divide.c