APC Schneider Electric AP9641 Network Management Card for UPS Gigabit NIC. Location: T Room A1. Trenmead Ltd Trading as Sudbury Electronics has been trading since 1979 providing a diverse range consumer electronics and IT hardware. All our stock is located in the UK at our 6,000 sq. Facility next to the world renowned Wembley Stadium in North West London. Our experienced team of engineers are on hand to answer any questions you many have. Our Wembley retail facility inspecting, testing and refurbishing incoming stock. They also carry out repairs on a wide range of consumer electronics equipment. We recommend you insure the package and use a tracked service. For “Other Courier” deliveries we use Fed Ex in most cases. Retail Outlet Opening Times. You can collect from our Retail Outlet at 27a Popin Business Centre, South Way, Wembley, Middlesex HA9 0HF during the above opening times. You can pay by cash, credit or debit card on collection. Faulty or Incorrectly Described Items.