Knightsbridge Screwless Multimedia Combo Plate + Dual USB A+C 12V DC 1.5A (Max. 18W) - Matt Black w/Black Insert Manufacturer: Knightsbridge (ML Accessories). Manufacturer SKU: SFR998MBB. Finish: Matt Black. Range: Screwless Switches and Sockets. Available to order, subject to supplier availability.