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 4 Drive 3.5in Trayless Hot Swap SATA Mobile Rack Backplane, 13.3 cm (5.25"), Bezel panel, Black, 3.5", Serial ATA, Serial ATA II, Serial ATA III, Aluminium, Plastic StarTech.com 4 Drive 3.5in Trayless Hot Swap SATA Mobile Rack Backplane. Size (imperial): 13.3 cm (5.25"), Type: Bezel panel, Product colour: Black. Width: 146 mm, Depth: 194 mm, Height: 127 mm. Package dimensions (WxDxH): 182 x 270 x 218 mm, Package weight: 1.43 kg. Cables included: SATA