(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.

Just plugged it in and it started working right away. No drivers, no reboot. (Windows 10). Best of all, no more cords for my mouse which declutters my desktop and gets rid of a cord which was in the way. Mouse has a nice shape and fits my hand well. It's responsive and works as well as my corded mouse.

bought really cheap on deal , but that doesn't have to be very useless! I do 4/3 work from home its hardly 2 months , this mouse broke ! In every other minute i have to switch the mouse ON and OFF to make it work ! Is it my punishment for buying cheap stuff on sale!

My more expensive Logitech died after three years, so I thought that I would buy this Lenovo 400. It is a bit smaller and lighter in my large hands, but I adjusted to it quickly and actually prefer it. Simple and functional. I would buy it again.

(This review was collected as part of a promotion.) It's the perfect shape for my hands. Not too big or too small. It's accurate and the clicks are clicky (for lack of a better word). The only thing that I would've liked added is a small compartment to store the USB Bluetooth dongle thing.