The HP 312X (CF380X) is an OEM high-yield black toner cartridge engineered for heavy-duty printing environments. Built with HP’s JetIntelligence technology, it delivers sharp, consistent black output and includes security chips to prevent fraud and optimize toner usage. Rated at approximately 4,400 pages (ISO/IEC 19752 at 5% coverage), it's designed to minimize downtime and reduce supply costs in busy offices 

Compatible with HP Color LaserJet Pro MFP M476 series (M476dn/dw/nw), it’s ideal for large-volume print jobs. The cartridge contains ~17% recycled content and participates in HP’s Planet Partners recycling program, balancing performance with sustainability 

Customers rate it highly (4.3–4.7★), praising its reliability and long-lasting performance.