With this device you do not have to change all the time plugs between joystick and mouse into your Amiga mouse port. Simply connect DB9 female plug of this device to your Amiga mouse port and then connect mouse and joystick to 2x DB9 male plugs. You can easily switch between mouse and joystick just by pressing fire on joy to activate joystick or click left button of your mouse to activate mouse. A coloured LED will light indicating which device is active. 

This switcher has extra pull up resistors for added fire button stability (similar as KMTech 1.01).

Color: as photo shown (3D printed semitransparent red case)

Compatible: All Amiga models (Amiga 600 will need additional adapter/DB9 extension cord), one buyer also reported be it working on Atari ST/STF/STE/MEGA ST/MEGA STE (on Atari 520/1040 ST a DB9 extension cord will be required because ports are located under the keyboard)

Connectors: DB9 Female to 2x DB9 Male.

* Device will be shipped untracked cardboard letterbox. I always ship the next business day after the payment.