RoHS stands for Restriction of Hazardous Substances. RoHS, also known as Directive 2002/95/EC, originated in the European Union and restricts the use of specific hazardous materials found in electrical and electronic products (known as EEE). All applicable products in the EU market after July 1, 2006 must pass RoHS compliance. The substances banned under RoHS are lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and four different phthalates (DEHP, BBP, BBP, DIBP). RoHS Lenovo Essential C455 4G50VW, 21.5", AMD E, 4 GB, 500 GB, Windows 8, Black Lenovo Essential C455 4G50VW. Product type: All-in-One PC. Display diagonal: 21.5". Processor family: AMD E, Processor frequency: 1.5 GHz. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 500 GB, Storage media: HDD. On-board graphics card model: AMD Radeon R2. Built-in camera. Operating system installed: Windows 8. Product color: Black