After hesitation, I bought Wireless Buzzer with USB key (essential) careful some buzzers are not sold with ... the setting is automatic so impeccable nothing to do, by cons if you want to play from 5 players you have to buy a USB key with another set of wireless buzzer (usually in sets of 4) which is expensive and blocks 2 USB ports !!!! So the solution has 8 players: teams of 2 players .... 4 buzzers or make 2 teams of 4 buzzers and board for a further rounds !!! If you forget to turn off the beeper they intersect after 20 mins automatically depending 2x 4 batteries (after use and prolonged use if not it will save REMOVE BATTERIES they flow and destroy the buzzers). ... based on very reactive buzzers to 10 m Maximum Reach: we had 4 meters of the console so ps3: impeccable (wired is not possible as too close to the TV ...).
