i keyboard, 1 mouse, one cheap 4 port hub permanently connected to keyboard and mouse, gives 2 spares...... I mounted mine in the laptop cooler unit, and removed most of the fans ( not in right place, so useless. Left the one that does blow into a slot intact) and hard wired the power lead to the internal USB power line along with a 100uF 10V capacitor in place of uncle Low's 10uF clapolytic. Takes no space and works a charm.