Diablo Cable 1m LC/LC Duplex 9/125 Single Mode Fiber Patch Cable 1 Meter (Single Pack) Standard OFNR Zipcord Yellow Jacketing 9/125 Micron Singlemode 2-Strand Duplex Cable SFF 8431 v4.1 Standard Compliant Polarity: Type A to B Crossover (Most Common for Duplex Patch Cords)