Dell Power Board 755.A2202.0001 is a replacement power board identified for use in the Dell C8618QT monitor. It is a monitor component, not an external power adapter.
The exact Dell part reference is 755.A2202.0001; the listing also identifies it by EAN 5704174597186. This gives you a specific part reference when sourcing the board for a monitor repair or replacement.
The listed compatible monitor is Dell C8618QT. No further electrical ratings, dimensions or package contents are specified in the product listing.