Thunderbolt 2, USB 3, Gigabit Ethernet, 4K Support, Firewire 800, Sound Ports
Disable the Caps Lock key
Incorrect Password — to avoid very confusing login errors with passwords, etc, disable the caps-lock key. An 'A' is not the same as 'a' for a password, except perhaps on sites with poorly-designed security.
Disabling the caps lock key also keeps you from “shouting” in email and similar— a breach of online etiquette that tags you as a newbie, or as obnoxious.
And bottom line, it’s a nuisance key that gets hit by mistake too often on Apple’s current keyboard.