root@cumulus : mgmt : ~# ethtool -m swp1
        Identifier                                :  0x11  (QSFP28)
        Extended identifier                       :  0x00
        Extended identifier description           :  1.5W max. Power consumption
        Extended identifier description           :  No CDR in TX, No CDR in RX
        Extended identifier description           :  High Power Class (> 3.5 W) not enabled
        Power set                                 :  Off
        Power override                            :  Off
        Connector                                 :  0x23  (No separable connector)
        Transceiver codes                         :  0x80  0x00  0x00  0x00  0x00  0x00  0x00  0x00
        Transceiver type                          :  50GBase-CR, 100GBase-CR2, or 200GBase-CR4
        Encoding                                  :  0x08 (PAM4)
        BR,  Nominal                              :  25500Mbps
        Rate  identifier                          :  0x00
        Length  (SMF, km)                         :  0km
        Length  (OM3 50um)                        :  0m
        Length  (OM2 50um)                        :  0m
        Length  (OM1 62.5um)                      :  0m
        Length  (Copper or Active cable)          :  1m
        Transmitter technology                    :  0×a0 (Copper cable unequalized)
        Attenuation at 2.5GHz                     :  3db
        Attenuation at 5.0GHz                     :  5db
        Attenuation at 7.0GHz                     :  6db
        Attenuation at 12.9GHz                    :  10db
        Vendor name                               :  Mellanox
        Vendor OUI                                :  00:02:c9
        Vendor PN                                 :  MCP1650-H001E30
        Vendor rev                                :  A5
        Vendor SN                                 :  TEST000001
        Date code                                 :  230210
        Revision Compliance                       :  SFF-8636 Rev 2.5/2.6/2.7
        Module temperature                        :  29.05 degrees C/84.30 degrees F
        Module voltage                            :  3.3157 V
        Alarm/warning flags implemented           :  Yes
        Laser tx bias current  (Channel 1)        :  0.000 mA
        Laser tx bias current  (Channel 2)        :  0.000 mA
        Laser tx bias current  (Channel 3)        :  0.000 mA
        Laser tx bias current  (Channel 4)        :  0.000 mA
        Transmit avg optical power  (Channel 1)   :  0.0000 mW / -inf dBm
        Transmit avg optical power  (Channel 2)   :  0.0000 mW / -inf dBm
        Transmit avg optical power  (Channel 3)   :  0.0000 mW / -inf dBm
        Transmit avg optical power  (Channel 4)   :  0.0000 mW / -inf dBm
        Receiver signal OMA  (Channel 1)          :  0.0000 mW / -inf dBm
        Receiver signal OMA  (Channel 2)          :  0.0000 mW / -inf dBm
        Receiver signal OMA  (Channel 3)          :  0.0000 mW / -inf dBm
        Receiver signal OMA  (Channel 4)          :  0.0000 mW / -inf dBm