Ford changed a few models to OAT, then backed away from it. VW, Audi, and Porsche are OAT users, too, but most others have resisted. Instead of OAT, most new cars now use a hybrid antifreeze that's formulated with both OAT and the silicate inhibitors from green (Japanese hybrids have different inhibitors). It comes in too many colors to pretend this type is color-coded.
Previously the USB port on the back of the device was locked down and couldn't be used for storage devices, but thanks to the recent updates, additional storage space can easily be added via a USB flash drive. Note that this update is for the Fire TV box only.
In terms of ports, the Fire TV is fully loaded. It has an HDMI port, optical audio output and Ethernet. There is also a USB 2.0 port, although that isn't enabled to do anything at the moment, except for debugging and interfacing in developer mode. Like the Apple TV and Roku 3, the Fire TV is HDMI only, so if you have an older TV without an HDMI port, it won't work.