... cables that plug directly into the host computer for normal keyboard operations. MECHANICAL DATAKey: 71 keys, super quality brushed stainless ... the council EMC directive 89/336/EEC EN55022: 1988+A1:2000+A2:2003 EN55024: 1988+A1:2001+A2:2003 Emission ... Interface: PS2, USB available. OS, DOS/Windows95/98/NT/ME/2000/2003/XP/Vista, Linux, Unix, Mac OSXENVIRONMENTAL ADAPTABILITYOperating temperature:-20oC ...