Genuine HP 142A Black Toner Cartridge 950 Pages - W1420A

Part Number: W1420A. Model: 142A. Compatible with: HP LaserJet M110w, HP LaserJet M110we, HP LaserJet MFP M140w, HP LaserJet MFP M140we. Colour: Black. Am I purchasing a genuine item like described?. Printers, Scanners & Supplies.