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 Origin Storage 2GB DDR2 667MHz UDIMM 2Rx8 ECC 1.8V, 2 GB, 1 x 2 GB, DDR2, 667 MHz, 240-pin DIMM, Green Origin Storage 2GB DDR2 667MHz UDIMM 2Rx8 ECC 1.8V. Component for: PC/Server, Internal memory: 2 GB, Memory layout (modules x size): 1 x 2 GB, Internal memory type: DDR2, Memory clock speed: 667 MHz, Memory form factor: 240-pin DIMM, CAS latency: 11, ECC, Product colour: Green