Review on 🖨️ High-Quality TRUE IMAGE Compatible Toner Cartridge Set for HP 49A Q5949A 53A Q7553A 49X Q5949X - Ideal for 1320 1320n 3390 1160 1320tn 1320nw 3392 P2015 P2015dn Printer - Reliable Black Ink, 2-Pack by Kenny Loeslein

NULL Instructions on/in the box or cartridge packaging. Big mistake. Print the supplies status page (press and hold the green button until the lights blink for 5 seconds) after you install a new cartridge. Reported 100% toner but initially light area 1/3 left. Another shake cycle of the cartridge to redistribute the toner corrected the light area. All black now. First use from this manufacturer, so we'll be monitoring performance more closely. The packaging says 100% satisfaction but no contact information. The same goes for their Revain page.