The 55909-0574 from Molex is a 0.4mm pitch dual row board-to-board SlimStack plug. This plug is made of brass material with gold material plating and gold termination plating. It mates with SlimStack board-to-board receptacle 51338 and 500913.
Vertical orientation
50 circuits (loaded)
Maximum durability of 30 mating cycles
Lock to mating part
Surface mount termination interface style
Operating temperature range from -25°C to +85°C
Maximum 0.3A current per contact, maximum 50V AC (RMS)/DC voltage