Wireless usb dongle suitable for projector interface usb 20 compatible with benq mx660 benq mx710 benq mx711 benq mx760 benq mx761 benq ms612st benq mw811st benq mx613st benq mx810st benq mx812st benq mx880ust wi fi specifications ieee 80211b ieee 80211g ieee 80211n wireless lan encryptions wep 64 bit wep 128 bit wpa wpa2 aerial internal function led status dimensions wxhxd 55 x 8 x 34 mm weight 75 g