HP 937e ink cartridges work with: HP OfficeJet Pro 9120e, 9130e, 9720, 9730, HP OfficeJet Pro 9110b Printer, HP OfficeJet Pro 9120b All-in-One Printer, HP OfficeJet Pro 9130b All-in-One Printer (~1650) pages Tested Original HP ink cartridges printed more than 2X the pages, on average, than non-HP. Recycle your used HP EvoMore Cartridges for free through HP Planet Partners using a customised fast-track process[7] or drop them off at convenient collection sites and HP recycles them to make new cartridges across the HP ink portfolio.[4] Purchase and register your HP EvoMore Original Ink Cartridges and join the EvoMore Community. HP, in alliance with the Arbor Day Foundation, will plant trees for each new HP EvoMore Original Ink Cartridge purchased and registered.[10] Ideal for high-volume and sustainability-conscious business printing What's in the box: 1 Cartridge Ideal for high-volume and sustainability-conscious business printingDesigned to print two times the pages as standard cartrid