The 757 had seat power / USB and one plane had an old DC point. A third today had a point hidden in the seat arm.
Empower on the 737 I'm on now.
Just had someone look like they refused an upgrade to first when he saw he was going to be seated next to an old Latina woman or a black woman. He came in the cabin, looked at the seat occupants and walked back and said he was happy back in economy.