One Box, One Receiver, One Set of Consequences
A combo is two devices sold as one decision. That suits the jobs where sameness is the point: a second desk, a study machine, a reception counter, a lounge PC driven from the couch, or a spare set kept in a drawer for the day something fails mid-deadline. One receiver occupies one USB port, both halves arrive matched, and there is a single invoice behind the warranty.
The consequences follow from the same logic. Manufacturers put most of the budget into the keyboard, so the mouse is usually the plainer half. The shared link means the receiver is a single point of failure, and the two devices rarely eat batteries at the same rate. Sets sold here carry local warranty cover and go out to every province, with counter collection at the Centurion premises if you would rather fetch.
