I buy the HP Ultra Thin Wireless Keyboard for many reason : 1 -rrb- need a wireless keyboard 2 -rrb- need a fairly compact keyboard 3 -rrb- be already use a HP wireless mouse with link-5 , and do not want to add another usb receiver to my system 4 -rrb- price be right 5 -rrb- figure HP quality would be fine , for a keyboard when I get the thing , I could not get it to connect to my link-5 wireless receiver that come with my HP mouse . at first , I think the keyboard itself be defective . but then I try the receiver that come with the keyboard , and it work for the keyboard . but then my HP mouse would not connect . take I a while to figure out what be go on . there be two version of this keyboard , the old style -lrb- the one I be review -rrb- and the new style -lrb- the one I want , the one I think I order ! -rrb- the difference between the two be the receiver and the model number . this be bk114aa , the one you do not want . the one you might want to order be a0b42aa . that be the exact same keyboard , but it have the link-5 receiver . I be kind of upset that this be not make more clear in the advertising for this product . it be like have two car , one with a\/c and one without . but not be able to know which be which until after the sale ... -lrb- well that be a nasty surprise -rrb-