So, my wife was helping me place a cover atop a shelf so we could paint. Like a dummy, I overlooked the fact my 15" MBP (2017) was atop said shelf with the LG supplied cable fed into my 5K display atop my desk. Before you know it, my lovely (relatively new) 15" MBP was lying top down upon the concrete floor after falling about 5' and now with the LG supplied TB3 cord ripped out of it. The cord was toast. I was pissed. Next day I called LG and asked if they'd take sympathy upon me and send me a new cable. LG graciously agreed and sent one out free of charge. Thanks LG! While waiting, I became impatient and ordered a TB3 cable from Amazon b/c I love my monitor & had no clue when the LG cable would arrive. (fortunately, aside a small bruise or two, MBP was fine - lucky) Cable arrives>Plug it in>Review System Preferences>Monitor Suddenly, with this new cable, I can rotate my monitor!!!!!!! This = happy me!! A near tragic event helped me to serendipitously stumble upon this sadly missing feature using the LG supplied TB3 cable. P.S. Once the LG replacement arrived, tried it, of course. No ability to rotate the screen. You're welcome. *I've edited the initial post b/c I accidentally attached a photo of the wrong cable - it's now been corrected.