The digitus fiber optic colored pigtails are available as lc simplex sc simplex and st simplex version and offer with the classes os2 om2 om3 and om4 best performance and link quality for your network the connector conforms acc iec 61754 4 2002 and is equipped with a zirconia ceramic ferrule the colored buffers are color coded according to iec 304 white violet turquoise black red pink orange gray green yellow brown blue simplex om 3 50125 2 m semi tight buffer colored b