The HD2 was HTC’s last Windows Mobile-based phone when it released in late 2009. It has, or really had, an active hacking community that made the phone do various amazing things like run Android, Windows Phone 7 and even Ubuntu-Linux. Today, we saw an all-new hack released for the HD2: it’s called USB Host and it allows your HD2 to, well, play as host device instead of client in order to connect to different USB peripherals.