I can no longer use either my MX Keys or my Ergo Trackball, because both of them cut out intermittently on my Mac. They've been doing it for some time, and no amount of tech support has fixed it. What would be awesome for future product releases would be a 'retro' version that still had a USB cable. I've switched products for both mouse and keyboard, since other brands offer USB cable options, and I've been much happier. But I would purchase a Logitech wired USB version of both the keyboard and mouse, if they were available. And especially for the Ergo, if it came with all the buttons and button-assigning options that exist in the current wireless version. Thanks.