HP LaserJet Enterprise MFP M631z Toner Cartridges

The HP LaserJet Enterprise MFP M631z uses two compatible black toners. The standard HP 37A (CF237A) prints about 11,000 pages, and the high yield HP 37X (CF237X) prints about 25,000 pages. The same toners also work in the HP LaserJet Enterprise M608dn, LaserJet Enterprise M608n, and LaserJet Enterprise M608x. Same-day shipping on most orders.