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 Dell Wyse R90LE, 1.5 GHz, AMD Sempron, AMD M690E, 2 GB, 2 GB, 4 GB Dell Wyse R90LE. Processor frequency: 1.5 GHz, Processor family: AMD Sempron, Motherboard chipset: AMD M690E. Internal memory: 2 GB, Maximum internal memory: 2 GB. Total storage capacity: 4 GB, Storage media: Flash. Maximum resolution: 2560 x 1600 pixels. Wi-Fi standards: 802.11b, 802.11g, Wi-Fi 4 (802.11n), Cabling technology: 10/100/1000Base-T(X)