Review on GPC Image Compatible Toner Cartridge Replacement for HP 414A W2020A 414X - Fits Laserjet Pro MFP M479fdw M454dw M454dn M479fdn Printer Tray - Black Cyan Yellow Magenta, 4-Pack by Chris Jens

These cartridges require the physical removal of a tiny chip from an "Original HP cartridge". This honestly requires a sure hand with tweezers and a surgeon's patience. Could never get it to work. And openly explains the difference in cost between this product and "real" HP cars. Don't waste money. I only wish I could reclaim the (over) hour I spent trying to get this to work and the frustration that was flushed up in me trying to get these stupid things to work. Don't waste your time!