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.
One is a mini-HDMI port. You can hook an appropriate HDMI cable to it and mirror your display onto an HDMI display. I've used this to watch movies from my Fire HD on hotel HDTV's. The second is a micro-usb port. You use it to charge your Kindle Fire HD, and also to connect it to devices like your computer, where you can directly copy content to and from your Fire HD. Views.