The power bank automatically controls whether it supplies power (Out) or charges itself (In) when you connect it to a laptop via USB-C. Switching takes place depending on the connected device and charging status, without you having to intervene manually. The power bank supports pass-through charging so that it can be charged and supply other devices with power at the same time. There is no special switch for manual control of In or Out. The LED display shows the charging and battery status [Powerbank features].