NOTE： we don't ship the item to PO BOX address， and we only ship the item to English address, so please leave us your physical English address when you pay. Note: please note all our items are original and activated, but if you are not familiar with this item or you don’t know how to use it, we suggest you don’t buy it as we can only provide simple technical support, such as install the driver. In order to convenient for our shipment, please leave your phone number when you buy this item not leave your Email address and please make sure the city name and zip code is corresponding when you write your address, otherwise you need cancel the transaction and make new order with correct address. NOTE: The box is activated for SAMSUNG HTC HUAWEI NOKIA LG ZTE models as we list, but not means all models of the phone are supported, some special model or function need to use credits, and the credits need to be bought by yourself from the official website. RIFF BOX v2 Interface Specification 20-Pin Male Connector: JTAG Interface: TRST, TDI, TMS, TCK, RTCK, TDO and NRST; SWD (Serial Wire Debug) Interface: SWCLK, SWDIO (SWDIO and SWCLK are overlaid on the TMS and TCK pins); 30-Pin Male Connector: SD/MMC Interface 1/4Bit @ 52MHz; Level-adjustable 23 GPIO Lines (1.65V to 3.6V); USB Device Connector: connects the Box with PC @ Hi-Speed (480 Mbps), approx. 20 MByte/sec; USB Host Connector: connects the Box with USB devices @ Full-Speed (48 Mbps), approx. 1.5-2 MByte/sec; RJ-45 Connector: RIFF Smart Probing Feature; UART Port; 4 Fixed 3.3V GPIO Lines;