Logitech Trackman Marble Trackball Mouse – Wired USB Ergonomic Mouse for Computers, with 4 Programmable Buttons, Dark Gray, Computers & Tech, Parts & Accessories, Computer Keyboard on Carousell
![vintage marble mouse the two button type. How do you scroll? I read press both buttons together but... : r/Trackballs vintage marble mouse the two button type. How do you scroll? I read press both buttons together but... : r/Trackballs](https://preview.redd.it/iy8mhqfgshh81.jpg?width=665&format=pjpg&auto=webp&s=3576b9e10368d7105f88e1abcae047a26179ce34)
vintage marble mouse the two button type. How do you scroll? I read press both buttons together but... : r/Trackballs
![Chromium based Microsoft Edge and Logitech TRACKMAN MARBLE mouse's universal scroll not working - Stack Overflow Chromium based Microsoft Edge and Logitech TRACKMAN MARBLE mouse's universal scroll not working - Stack Overflow](https://i.stack.imgur.com/Tvh1j.png)