Dell 21204-00373 power board is a replacement board intended for the Dell E2219HN monitor. It is identified by MPN 21204-00373 and OEM reference 021204-00373, so the part can be distinguished from other monitor boards.
The listing classifies it as a power board, making it a service part for the monitor’s power section. The confirmed application is the E2219HN; no further monitor compatibility or electrical specifications are stated for this part.