The Dell 3100 is a laser printer ideal for small and medium size printing tasks. The average speed of the printer for a text document is 25 pages per minute, and 5 ppm for color documents. The Dell 3100 uses black cartridge number 310-5726 , cyan cartridge number 310-5731, magenta cartridge number 310-5730, and yellow cartridge number 310-5729 . The average page yield of each cartridge is 4,000 pages at 5% coverage, which is usually a regular letter size page with text. The standard paper capacity is 400 sheets. The printer resolution, 600 x 600 dpi. This printer is mostly intended for small to medium printing jobs, users looking for more speed will need to upgrade to faster models. The replacement cycles of the printer are convenient, mostly based on the high yield capacity of the cartridges that reduces the cost per page, and allows users to utilize the color features of the printer without fear of breaking the bank.
Open the printer's front cover and unlock the toner cartridge by turning the handle.
Remove the used toner cartridge from the printer.
Shake the new toner cartridge firmly for 5 to 6 times from right to left. 
Remove the white strip at the bottom of the new cartridge.
Insert the new cartridge into the printer.
Lock the cartridge in place by turning the handle back to its original position.