The NBS21U2B features 2 Type A USB sockets (2.1A, 5V), which are suitable for charging mobile phones, and a wide range of other personal devices. BG's Smart USB technology, which automatically puts the socket into standby mode when the device is fully charged, detects the USB device and tailors the style of charging to suit and has an overload protection function. • Free your sockets and charge all your devices - Ideal for mobile phones, tablets, and other USB chargeable devices • Variable voltage fast charging with PD & QC charging protocols for Android and iOS devices • Smart USB - Standby mode when device is fully charged; AutoDetect's the USB device and adjusts charging pattern to suit. • Angled colour coded terminals for easy identification and captive screws to prevent screw loss. • Charge up 70% faster than standard 5V charging. • Twin earth fitted as standard for high integrity circuits. • Moisture control gasket protects metal edges from tarnishing.