Logitech Media Combo USB cable & pin & Mouse T-41126 8K89 used | eBay
I don't have the original receiver dongle for this. Are they specific to each trackball via frequency? I have one they looks like they right one but won't connect and haven't spent
New Original Mouse Replacement Ball For Logitech Cordless Optical Trackman T -rb22 Gaming Mouse - Mouse - AliExpress