(This review was collected as part of a promotion.) Mouse is fully functional and inexpensive. Similar to an another mouse I have used for years. It works on all surfaces and it is adequately fast. One limitation of this purchase is that it uses the one and only USB (B) port on my YOGA which is what all mye existing accessories use. I bought a port expansion module that used the same port and put the mouse sender in the expansion module. The mouse then performed poorly with unusable time delays. I then bought a port expansion that connected to one of the two "c" ports which solved the problem since i can use the USB for the mouse without this limitation.