This is a used item that has been tested and confirmed to be working. The following operations are possible by switching between CHARGE and OTG: * You can operate USB devices (tablet PCs) while charging. * You can connect a mouse and keyboard. * You can supply power to a smartphone. This item is being sold as-is, as it is currently stored. Please understand that no claims or returns will be accepted after receiving the product. Please bid only if you understand and agree to these terms.