Genuine HP 87X High Capacity Black Toner Cartridge - CF287X 843C so you shouldn't need to

so you shouldn't need to replace it too often

These are original HP 501A and 502A Toner Cartridges

Part Number: 109R00783

HP Laserjet 4200dtnsl

Genuine HP 87X High Capacity Black Toner Cartridge - CF287X 843C so you shouldn't need toThis is an original high capacity HP 87X black toner cartridge. Original means this toner is a brand new toner made by HP. The black 87X toner can produce up to 18,000 pages of sharp black and grey prints before it will need to be replaced. So it's ideal for high volume users printing often and or in batches. Model: 87X Product family: CF287X Compatible with: HP Colour Laserjet Enterprise M527dn toner cartridges (includes; Colour Laserjet Enterprise