Optoma BI-EXTBGN, Mini IEEE802.11b/g/n Wireless USB Adaptor (Discontinued by Manufacturer) Mini IEEE802.11b/g/n Wireless USB Dongle Compatibility: TW675UST-3D/TW675UTi-3D/TW675UTiM-3D/TX665UST-3D/TX665UTi-3D/TX665UTiM-3D/ML300/ML500/ZX210ST/ZW210ST UPC Code: 796435090258 90-Day Warranty