Brother WT100CL MFC-9440CN Waste Toner Pack - Compatible Replacement Black Toner Cartridge for Brother Printers | Perfect for Office & Home Printing Needs

Changing the excess toner box is eventually necessary, and not that expensive relative to the cost of the Brother printer--itself. Changing the excess toner box in the Brother duplexing color laser model HL4040CDN is simple. With the power switched to "Off", open the front of the printer as if changing toner. Slide out the drum unit until it stops. Remove the drum unit and set it on a clean paper on a table top. Lift the old belt unit out. It lifts from this green tab at the front of the belt unit. It weighs only a couple of pounds so it is easy to lift up and out from the printer. The excess toner box is right below where the belt unit was, and it lifts out from the printer easily and it is rather light. Replacing is the reverse of the process. The procedure took 9 minutes in total to change both the excess toner box as well as the belt unit. Since I was in there, changing the belt unit was becoming an eventual need lest I later face a broken belt unit and some toner to clean up inside the machine.The price of the excess toner box was less than $25 on Amazon--delivered. Cheap.We have gone 37,000 pages printed thus far in two years. We are on the original drum. There is no toning, and no dots or streaks appearing on the image. The drum is behaving well thus far.Amazon's ordering process was easy. Order processing was by the next day. And delivery took 3 days--to Hawaii. And we had selected Super Saver Shipping which was free.