The standard capacity HP 207A black toner cartridge has a respectable estimated page yield of 1,350 prints, making it a good choice for those in a small office environment. Whilst those who print more frequently may want to consider the black 207X, the Hewlett Packard W2210A is perfect for those who occasionally need to run off a page (or two).The HP W2210A is compatible with several Colour LaserJet Pro printers including the M255dw, but a full compatibility list can be found on this page. Hewlett Packard fully guarantee the 207X black directly, should you ever need them, but the quality of manufacture means this is very unlikely.