Four mains and four USB ports for three seats, someone took this really seriously. (All while most other cd carriages have often just like one plug per 4 seats if any.)

https://blovice.bahnhof.cz/media/2a4f93bbc0a2c7cb0dc1281b9cc1dee9ac2ba2669271c4bd78b72f5a1885bebf.jpeg 

 @Cat poni, Whorseman of Apocalypse ICEs are one plug per two seats.