USB Host Mode on Motorola XOOM

Motorola XOOM gets USB host functionality. No software changes, this article shows you how to enable Motorola XOOM the ability of USB host functionality, which grant you the potential to have the ability to read media from external SD card reader, USB HD, USB DVD adapter, USB LAN adapter, and etc. Potentially, Motorola XOOM can work as a PC and access all kinds of external USB devices. Will introduce the software level changes later to enable reading from SD card reader, connect USB LAN, etc.
Motorola XOOM works as a portable device (just like the mobile phone), provides a micro-usb to connect to PC. In this way, PC can access media in the Motorola XOOM. Motorola XOOM works as a USB client.
Motorola XOOM can also work in Host mode, because it has the USB OTG (on-the-go). How to switch the USB OTG on the Motorola XOOM to USB Host mode? It is very simple. You just need need a USB toggle cable. The USB toggle cable looks like the following:

After the Motorola XOOM plugs with this USB toggle cable, it can connect with all kinds of USB devices. To make the USB devices work on Motorola XOOM, linux drivers change may be needed. Will introduce some later.
In the kernel log, following message will be shown after USB toggle cable connected: