Hello to all,

I was on a NW/CO codeshare flight recently. Had no problems using my laptop (230V/50hz with adapter) on the NW sector, but found I could not do the same on the CO flight -- a B772 -- though I was in a row with a PC power port.

I understand from CO's website that all adapter cables must be EmPowerŪ approved. Does anyone know what this means? -- and what type of sockets are used on CO flights? They have the appearance of two small circular holes.

Thanks.