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 ST122HD4KU, HDMI, 2x HDMI, 3840 x 2160 pixels, Black, 30 Hz, 1280 x 720 (HD 720), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 2560 x 1600 (WQXGA) StarTech.com ST122HD4KU. Video port type: HDMI, Video out: 2x HDMI. Maximum resolution: 3840 x 2160 pixels, Product color: Black, Maximum refresh rate: 30 Hz. AC input voltage: 100-240 V, Input current: 0.5 A, Output voltage: 5 V. Width: 1.97" (50 mm), Depth: 24.4" (620 mm), Height: 0.709" (18 mm). Package width: 9.06" (230 mm), Package depth: 6.14" (156 mm), Package height: 2.2" (56 mm)