The STL Airport Marriott has them in the Marquis Tower rooms....
That said, for me it was a waste of time as the menu/input buttons on the LCD itself had been de-activated and the oh so wonderful remote had three buttons for the LCD itself, two of which actually worked. Of course the one that didn't work was the one to switch input source. At least I was able to fix the automatic stretch the LCD is set on any time you turned it on. Asked for another remote and the two they brought also had the input button labeled, but not working. Staff was clueless how to reprogram them to get it to work.
Even tried hooking directly into the TV rather than through the jack-pack but without a method to change the input source, didn't work. Come to think of it, wireless internet was also down during my visit...this property apparently struggles to keep up with technology. The front desk agent didn't even know what a jack-pack was even though it is inlcuded in all rooms in the Marquis Tower, she had to ask another agent.