This is casing designed for a "DIY keyboard" USB controller pcb and a 3x4 key mechanical keyboard. The controller can be bought at … | Keyboard, Key diy, Macro keys
MEMBRANSKA TASTATURA 3X4 - Kupindo.com (38121691)
3x4 Scan Keyboard | Makerfabs
Tastatura 3x4 Taste numerice pentru aplicatii electronice OKY0271 - eMAG.ro