This value specifies link length that is supported by the
transceiver while operating in compliance with applicable
standards using 50 micron multimode OM2 [500MHz*km at 850nm,]
fiber. The value is in units of 10 meters. A value of 255
means that the transceiver supports a link length greater
than 2.54 km. A value of zero means that the transceiver
does not support 50 micron multimode fiber or that the
length information must be determined from the transceiver
technology.