it be compact , and it just work ! I buy this to replace a similar one that come with my xtreamer Ultra PC that would not pair with it be usb stub . this new one work right out of the box . the only negative for I be that the touchpad be a bit awkward to use , but I just use a usb Logitech wireless mouse that I have and I be fine now . it be nice not to have to have a large keyboard sit next to I on the couch anymore .