This is a high quality compatible HP 92291A Black Laser Toner compatible with the following printers:Hewlett Packard LaserJet Printers:HP LaserJet 4 Si, HP LaserJet 4 SiMX, HP LaserJet III Si This Laser Toner has a page yield of 10000 Using a compatible Laser Toner gives you excellent printout quality without the high prices!Images used are for illustration purposes only.