Quantity:(1-Pack) Size:Length(30cm/12inch) Color:(black) Connectors 1: USB 3.0 A male jack cable (Charging & Data Transfer), Connectors 2: USB 3.0 A female jack (Charging & Data Transfer) +USB 2.0 A female jack (Charging) cable Product Applicable Equipment: This sync USB 3.0 A power adapter Y cable can solve issues as one USB port unable to supply sufficient power, fixing problems with low-powered USB port. This cable allows for power to be taken from 2 USB ports, such as a PC, external hard drive, intermittent ,keyboard, audio. This dual usb splitter allows for power to be taken from 2 USB ports(usb3.0 + usb 2.0 ) female juck,The USB Y splitter cable is commonly used in USB 2.0 device, just plug and play , easy to use. The transfer spped of the USB 3.0 A cable can reach 5.0Gbps (500MB/s),which make data transfer quicker.can also be used with either USB 1.1 or USB 2.0 periphe