HP LaserJet Enterprise Flow MFP M631h Toner Cartridges

The HP LaserJet Enterprise Flow MFP M631h uses black toner in two sizes. The standard HP 37A (CF237A) prints about 11,000 pages, and the high yield HP 37X (CF237X) prints about 25,000 pages. Both are compatible toner, made to replace the HP part numbers. The same supplies also fit the LaserJet Enterprise M608dn and LaserJet Enterprise M609dn.