HP CF320X Laserjet Toner, Black, Print technology Laser, Page yield (black and white) 21,000 pages, Operating temperature range 59 to 81°F, Storage temperature range -4 to 104°F, Operating humidity range 10 to 70% RH, Storage humidity 10 to 95% RH. Maintain high business productivity. Avoid wasted time and supplies with a reliable, high-capacity Original HP toner cartridge designed for frequent jobs such as email and everyday documents with crisp, black text.