The HP Toner Collection Unit (5KZ38A, also known as HT5KZ38A) is an essential maintenance kit designed to capture excess toner during the printing process. With an approximate 7,000‑page capacity, it ensures clean, smudge-free results and maintains consistent print quality Compatible with various HP Color LaserJet 150a/178/179 series printers, this genuine HP unit is easy to install and helps prevent toner buildup and internal printer issues HP supports a strong sustainability initiative, offering easy recycling options through its Planet Partners program