Just upgraded the memory on my ET2410. Used two 8gb ddr3 modules and now running with 16gb total without any problems. It was a bit of work; I had to remove the stand, then carefully pry off the back cover, and finally remove a metal plate covering the system board (processor, memory modules (2), and various connectors become exposed). A standard Phillips screwdriver size 2 for the stand, size 1 for the smaller screws for the cover and metal plate also a small pair of pliers to take out two VGA monitor screws on the metal plate.
By the way, I am sure this would void your warranty as ASUS doesn't support the upgrade. Since my computer is was out of warranty and I needed the upgrade more than worrying about damaging my computer, it was worth it the effort. I also updated the BIOS, ran various memory tests, and have been running my normal program routines without any hitches. In fact, I am already seeing faster responses in all of the programs I have been running. Nice to go from 4 GB (2x2GB ram chips) to 16 GB (2x8GB) with only about an hour of time. I saw many posts about this topic; saying it wouldn't support more than 4 GB or 8 GB was the max that could be upgraded. So I was pleasantly surprised to see that 16 GB worked fine.