CF237A - Compatible HP 37A Black Toner Cartridge - 1 Pack 743 The "A" stands for standard

The "A" stands for standard yield

LaserJet 3300MFP

HP Color Enterprise M552dn MFP M577

ensuring the good communication between printers and toners

Manufacturer: Cool Toner (NOT HP OEM)

CF237A - Compatible HP 37A Black Toner Cartridge - 1 Pack 743 The "A" stands for standardBrand: Cool TonerModel: HP 37A CF237A Specifications Cartridge Color: BlackApproximate Page Yield: 11,000 pagesCompatible Printers: HP LaserJet Enterprise M607 M608, LaserJet Enterprise M607n, Enterprise M607dn, M608n, M608dn and M608x, M608dh, M609x, Enterprise M609dn, M609dh. Second, for HP LaserJet Enterprise MFP series, there have MFP M631z, MFP M631h, MFP M631dn, MFP M632h, MFP M632z, MFP M632fht and MFP M633fh. Last, for HP LaserJet Enterprise