Replacement power adapter for HP PRINTER. Check your connector; only two of the channels on this plug are active! Make sure that yours is one of the printers that only needs two!

For HP Photosmart B210 C7250 C7280 C310 OfficeJet 7400A 6500 7612 J4550 4500 Printer All-in-One 4500 J4540 C6180 6000 4500 Wireless Printer

See photos for compatible parts