So, I posted here yesterday trying to figure this out because to be able to boot from a USB to install Linux on most Chromebooks you need to disable write protection. Each Chromebook is different than the other so it makes it hard to make a tutorial for all Chromebooks, and because this is a newer Chromebook there is barely any information out on it yet. While trying to find out where the hell the write protection hardware on this thing is I even resorted to talking to Samsung support. Support assured me that there is no write protector on this Chromebook...they were wrong. Anyways, the write protector is on the back of the motherboard. It looks different than all other write protectors I've seen online so I wasn't sure about it when I removed it. It is the only screw with an arrow pointing towards it on the back of the motherboard. There is also a littler metal under the screw. I hope this helps anyone else who wants to buy this Chromebook and put Linux on it.