I have unraid set up with the following components:
 

Mobo: ASRock b450 Steel Legend

Nic: Intel X540-T2 (connected to PCIe 3.0 x16 slot)

Switch: MikroTik CSS610-8G-2S+in

SFP: 10GBASE-T SFP+ to RJ45 Transceiver, x2 in SFP ports on switch ( https://amazn.so/DiGZPMY )

 

Mac mini M4 with upgraded 10G ethernet and unraid server are connected to the SFP ports on switch using CAT6 cabling (both 25ft or less) 

Server is also connected with two other CAT6 cables from the second port on the 10G nic, and the mobo LAN port.

 

Here are screenshots of the settings. I'm new to networking and unraid. 

It looks like the NIC is showing 10G speeds on eth1, but not getting those speeds and not sure why.

known driver and base interface setup issue...

as pulled from realtek support forum:
 

you need to tell unraid the interface is 10 GB compabilite or install the correct interface driver plugin...

ethtool -s eth0 autoneg on advertise 0x80000000002f

 

replacing eth0 wiht the interface of that nic and 0x80000000002f with the reference for 10 GB 

0x80000000002f is 2.5 GB

as you are using bond...

 

what is the output of ip a

and

ethtool eth0
ethtool eth1

ethtool eth2

YOU may only need to set speed (user scirpt plugin at first arry start...
 

ethtool -s eth0 speed 10000 duplex full autoneg on
 

ethtool eth0
example:

Quote

Speed: 10000Mb/s
Duplex: Full
Link detected: yes

 

Quick Note:

Your Intel X540-T2 natively supports 10GBase-T — you don’t even need SFP modules on that side; it’s purely copper RJ45 up to 100m Cat6a/7.

Your MikroTik CSS610-8G-2S+in with RJ45 SFP+ modules does a good job pretending it’s a copper 10G port. However, some cheap SFP modules don’t properly signal 10GBase-T, which sometimes requires forcing speed.

you have created an "active backup" bond of all three cards. This means, only ONE of them is really working!

Delete the bond and create a bridge instead, this is what you really want to see (all three cards work together and pass on packets between them)