HP LaserJet Pro 400 M401a, 400 M401d, 400 M401dn, 400 M401dw, 400 M401n, MFP M425dn, MFP M425dw Printers. Page Yields 2,300 Pages For Black (@ 5% coverage). We have sold thousands of these sets and are fully confident that you will also be 100% satisfied with your order.