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 Wireless 1520 (802.11 a/b/g/n), PCIe, Nội bộ, Có dây, PCI Express, WLAN, Wi-Fi 4 (802.11n), 300 Mbit/s DELL Wireless 1520 (802.11 a/b/g/n), PCIe. Nội bộ. Công nghệ kết nối: Có dây, Giao diện chủ: PCI Express, Giao diện: WLAN. Tốc độ truyền dữ liệu tối đa: 300 Mbit/s, Tiêu chuẩn Wi-Fi: Wi-Fi 4 (802.11n), Dải tần Wi-Fi: Băng tần kép (2.4 GHz / 5 GHz)