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 EC2S55254, ExpressCard, Serial, RS-232, RS-232, Black, Laptop StarTech.com EC2S55254. Host interface: ExpressCard, Output interface: Serial, Serial interface type: RS-232. Product color: Black, Purpose: Laptop, Certification: CE, FCC. Chipset: Moschip MS9922CV-AA, FIFO (First In, First Out): 256 B. Windows operating systems supported: Windows 2000, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows Vista Home Premium,..., Mac operating systems supported: Mac OS X 10.4 Tiger, Server operating systems supported: Windows 2000 Server, Windows Server 2003, Windows Server 2003 x64. Width: 2.32" (59 mm), Depth: 4.72" (120 mm), Height: 0.787" (20 mm)