1.        BC1.2 USB Charging Adapter 2.        BC1.2 USB 5m / 10m / 20m / 50m Charging Repeater Cable 3.        BC1.2 USB 2 / 4 / 7 /13 / 36 Ports Charging HUB The BC 1.2 Product system are an USB power switch and an universal battery charging adapter or HUB with an integrate USB2.0 high-speed data switch. The BC 1.2 Product system provide the electrical protocol handshake on D+/D- to support the following battery charging schemes: (1) USB 2.0BatteryCharging Specification 1.2 (BC 1.2) (2) Chinese Telecommunication Standard YD/T 1591-2009  (3) Divider mode , complaint with most of Apple devices   such as iPod ,iPhone and iPad. These charge modes allow the host device to actively select betweenDedicatedChargingPort(DCP) for wall adaptor emulation,ChargingDownstreamPort(CDP) for USB 2.0 data communication with 5V/1.5A support, orStandardDownstreamPort(SDP) for regular USB 2.0 / USB 3.0 data communication with 500mA/900mA Support.  The BC 1.2 Product system also integrates an auto-detect feature that support DCP /CDP /SDP mode.  (1) DCP mode : With DC adaptor only  (2) SDP mode :  With USB host communication only  (3) CDP mode : With USB host communication only and DC adaptor