The value of tmnxPortLinkLengthInfo indicates the link length info stored in SFF EEPROMs. tmnxPortLinkLengthInfo is applicable only when tmnxPortSFPEquipped is 'true'; otherwise, all 6 bytes will have a value of '0'. See SFF Committee documents for details on the representation of the values in each byte. For SFP EEPROMs, the 6 bytes are bytes 14 to 19 of the A0 bank inclusive, described in SFF Committee document SFF-8472. For XFP EEPROMs, the first 5 bytes are bytes 142 to 146 of the 01 bank inclusive, and byte 6 will have a value of '0', described in SFF Committee document INF-8077i. For QSFP EEPROMS, the first 5 bytes are bytes 142 to 146 of upper page 00h. Link length support is shown in one or more of the 5 bytes dependent on the module, this is described in SFF Committee document SFF-8636. The 6th byte (byte 147) will have a value that represents the QSFP technology. For CMIS EEPROMS, the first 5 bytes are bytes 132 to 136 of upper page 01h (Extended Data & Advertising Page). Link length support is shown in one or more of the 5 bytes dependent on the module, this is described in OIF CMIS.