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 Does not contain "conflict minerals": tantalum, tin, tungsten, and gold. Y The Celeron® processors support a wide range of multimedia capabilities to entertain and entice all throughout your day. Create, edit, and manage important files on the go. Easily organize contact lists and messages. Experience improved features and functionality to help you be more productive at work. The Celeron® processor levels up the fun with improved graphics, smooth action, and healthy battery life to support enhanced casual gameplay. Intel Celeron G Hard Drive HDD HP Pro 3500, 2.7 GHz, Intel® Celeron® G, 4 GB, 500 GB, DVD±RW, FreeDOS HP Pro 3500. Processor frequency: 2.7 GHz, Processor family: Intel® Celeron® G, Processor model: G1620. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1600 MHz. Total storage capacity: 500 GB, Storage media: HDD, Optical drive type: DVD±RW. On-board graphics card model: Intel® HD Graphics. Operating system installed: FreeDOS. Power supply: 300 W. Chassis type: Micro Tower. Product type: PC. Product color: Black