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 120GB TLC SATA PWS 670 3.5in Kit with HD Rails, 120 GB, 3.5", 500 MB/s, 6 Gbit/s Origin Storage 120GB TLC SATA PWS 670 3.5in Kit with HD Rails. SSD capacity: 120 GB, SSD form factor: 3.5", Read speed: 500 MB/s, Write speed: 500 MB/s, Data transfer rate: 6 Gbit/s, Component for: PC/Laptop