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 StarTech.com S354SMTB2R, HDD enclosure, 3.5", Serial ATA, Serial ATA II, Serial ATA III, Thunderbolt 2, 20 Gbit/s, Silver StarTech.com S354SMTB2R. Product type: HDD enclosure. Number of storage drives supported: 4, Storage drive size: 3.5", Supported storage drive interfaces: Serial ATA, Serial ATA II, Serial ATA III, Thunderbolt 2, Maximum storage capacity: 6 TB. Data transfer rate: 20 Gbit/s. RAID levels: 0, 1, 10, JBOD. Product color: Silver