The HP 151X (W1510X) is a high-capacity black laser toner cartridge designed to keep your office printing efficient and consistent. Utilizing JetIntelligence technology, it delivers a substantial page yield of approximately 9,700 standard pages, which means you spend less time replacing supplies and more time focusing on your work. This cartridge is specifically built for use with HP LaserJet Pro 4003 and 4103 series printers, including the dw, fdn, and fdw models. Weighing about 0.97 kg, it is engineered to operate reliably in environments with temperatures between 0 and 35°C and humidity levels from 20 to 80%, ensuring stable performance throughout the workday.