Leveraging the USB 2.0 OTG mode, the RAM-GDS-CHARGE-OTGAU adapter enables phones and tablets to charge and utilize the OTG accessory mode at the same time. This allows for the use of accessories such as keyboards, a mouse, USB 2.0 Flash drive, barcode scanners, printers, and other devices supported in the USB-IF OTG specification. Eliminating the need for a separate charger, the adapter allows the tablet to be in both host mode and accept a charge of up to 1.67A (at ~5V). The internal charger supports USB 2.0 BC1.2 mode as a DCP mode charger to the host device. The adapter solves the desire to support peripherals and charge through the single Micro-USB port on the host device.