The M570 is now made only in the "wireless"model. Logitech used to make a similar model that was wired USB, it was the Logitech Trackman Marble, it was available in both grey and beige, but has been discontinued. Logitech still makes what is called Trackman Marble but it looks completely different than the M570 and the "old" Trackman. Google Trackman Marble, photos of both the old and new Trackman are online. There are a few of the old wired USB Trackmans for sale online, but most are in "used" condition. If you are lucky, you might find one still in the box.
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