Serial Switch Interface
The Crick Serial Switch Interface allows you to connect switches to your computer through the serial port. It has two 3.5mm sockets for your switches and comes with a universal adapter for 9-pin and 25-pin serial ports.
If you have a USB port, we recommend the Crick USB Switch Interface, but if you have an older computer, the Crick Serial Switch Interface is ideal.
Operates most switch-accessible software
Easy to set up
Requires Windows 98 and above and a free serial/COM port