Does RHEL 7 support displaying 50Gbps network link speed?

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Issue

Does RHEL 7 support displaying 50Gbps network link speed?
Because we use a Mellanox 50G EN Mezz card, the ethtool command couldn't show the 50000 link speed.
The card's vendor says an updated ethtool must be used.

Environment

Red Hat Enterprise Linux 7.2 and earlier
ethtool-3.15.el7
50Gbps network interface

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