Check the listing for details. Leo Bodnar Button Box Interface BBI-64. Condition: New. Listed at 62.75 USD. USB button | switch | encoder interface board with simple connections. Works on Windows, Mac and Linux. Build your own device - flight panel, button box, music controller, robot controls or anything else that interfaces to a computer. Does not require drivers - works immediately after plugging into USB port. Not all software supports more than 32 buttons (e.g., FSUPIC does not support more than 32 buttons per input device.) Up to 64 buttons or 32 rotary encoders connected directly to their dedicated inputs. An encoder uses two button inputs. There is no need to use any matrix wiring at all. Four buttons can be assigned to POV Hat switch. DimensionsLength3.35" | 85mmWidth2.05" | 52mmHeight0.63" | 16.1mmPin header spacing 0.1" | 2.54mmMounting Screw HoleM3 | #3-56The PCB has a standard USB-B type connector for a standard USB A-B cable (not included). Plug it in and use straight away.