This is a 2.0m (6.6ft) LC (male) to SC (male) blue OS2 Duplex riser-rated patch straight cable that is used for high speed data transfer. OS2 is a standard single-mode optical fiber commonly used with wavelengths of 1310nm and 1550nm (9/125 microns), and has a maximum attenuation of 1dB/km. The OS2 standard is defined in ISO/IEC 11801. This riser (OFNR) cable is best suited for use in interior fiber-optic applications. Duplex cabling provides two-strands of fiber and is most commonly used in applications that utilize one lane to transmit and one lane to receive.