HP 21 Black Inkjet Print Cartridge for professional-looking prints
Produces photo-quality black and white prints that resist fading
Produces crisp black text
Page yield: approx. 190 pages (depends on printer and specific use)
HP printer compatibility: Deskjet 3910, Deskjet 3930, Deskjet 3940, Printer/Scanner/Copier 1410

Compatible with -
HP All-in-One Machines PSC 2110 Series, PSC 1350 Series, PSC 2175, PSC 2150, Officejet 5510 Series, PSC 1210 Series, PSC 2210 Series, PSC 2510 Series, Officejet 4110 Series, PSC 2410 Series, Officejet 6110 Series, PSC 1315 Ser, PSC 1311, Officejet 4215 Series
HP Copy Machines Digital Copier-Printer 410
HP Inkjet Printers Business Inkjet 9650, Deskjet 5550, Deskjet 5551, Deskjet 5650 Series, Deskjet 5150 Series, Deskjet 450 Series, Deskjet 5850 Series, Deskjet 9650, Deskjet 9670, Deskjet 9680
HP Photo Printers Photosmart 7760 Series, Photosmart 7350 Series, Photosmart 7550 Series, Photosmart 7660 Series, Photosmart 7960 Series, Photosmart 7260 Series, Photosmart 7150 Series, Photosmart 7450 Series

High Yield - 170 Pages
Ink drop size - 5 pl
Print vivid images with outstanding fade resistance,[4] using an inkjet print cartridge with HP Vivera Inks. Photos and graphics appear rich and crispand resist fading for generationswhen you choose inks designed for HP printers and papers.
Count on superior reliability and performance when you choose Original HP inkjet print cartridgesdesigned with your printer for optimal results. Get the best value when you select from print cartridges tailored to your printing needs.
Count on HP for a superior printing experience. Original HP inkjet print cartridges are widely availableonline and in storesand simple to install. Plus, HP's Planet Partners[2] program makes it convenient to recycle your empty print cartridge.