GLINK 5V Power Adapter Model GAC5-2 The general appearance of a switching adapter is similar to a male power plug, which comes in both round and flat pin types, used for connecting to a household AC outlet. The other end has a DC jack for connecting to electrical appliances and electronic devices. It has an indicator light, the plug pins are arranged horizontally across the adapter body, and the internal circuit board is laid out horizontally. A switching adapter is a device that converts alternating current (V) or household electricity (AC) 220V to direct current (DC) 5V, or a 5V adapter. This is the voltage commonly used by electrical appliances and electronic devices such as CCTV cameras, recording devices (NVR, DVR), routers, small fans, LED lamps, game consoles, small speakers, and other network equipment.