This value specifies link length that is supported by the
transceiver while operating in compliance with applicable
standards using 62.5 micron multimode OM1 [200 MHz*km at
850nm, 500 MHz*km at 1310nm] 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 62.5 micron
multimode fiber or that the length information must determined
from the transceiver technology. It is common for a multimode
transceiver to support OM1, OM2 and OM3 fiber.