The first interface factor to consider is whether the Android platform supports USB host. Android smartphones always provide a USB device port but some Android tablets provide both USB host and USB device ports. The USB device port is for connecting to a PC or embedded host to enable data transfer and battery charging. The USB host port is for connecting to USB peripheral hardware. Many Android platforms are now supplied with On-The-Go (OTG) USB ports, which allow for the USB port to be either a host or a device. Some of these OTG ports will be USB device only and some will offer both USB host and device capabilities. One way to determine if a user’s Android platform supports USB host and/or device is by the cable type. A Micro-AB cable will likely be both USB host and device, whereas a Micro-B cable will indicate USB device only.