HP LaserJet Enterprise flow MFP M631dn Toner Cartridges

The HP LaserJet Enterprise flow MFP M631dn uses black toner in two sizes. The standard option is the HP 37A (CF237A), rated at about 11,000 pages. The high yield option is the HP 37X (CF237X), rated at about 25,000 pages. Both are compatible toner. The same supplies also fit the LaserJet Enterprise M608dn, LaserJet Enterprise M609dn and LaserJet Enterprise MFP M631dn. Same-day shipping on most orders.