Ds220+ with 2xSabrent 2.5gbps ethernet adapters

[Maxgent1977]

Good evening,
at the momenti i can't seem to use 2.5 bandwidth when copying files from Ds220+ 10GB ram upgraded nas to my desktop Win 11 pc.
Ds has 2xSabrent 2.5gbps ethernet adapters:

Rest of setup is like that :

Desktop with dual rj45 rtl8125b network adapters connetcted directly to a QNAP QSW-1105-5T.
Sabrent adapters are hooked to that switch too and all ports are working at 2.5g (green led lit).
When i copy files from nas to pc i get only 1Gb speed running iperf3
Any help would be great.
Thanks in advance

[Swimmer71]

How did you manage to see 2 of the USB/LAN adapters? I also tried 2 of UGREEN 2.5G USB to LAN adapters with my DS718+, but I only got LAN3 with 2.5G and never saw LAN4 with the second one. Info-center shows me both USB devices under USB-device.
I wanted to make a bond out of them.

[Maxgent1977]

How did you manage to see 2 of the USB/LAN adapters? I also tried 2 of UGREEN 2.5G USB to LAN adapters with my DS718+, but I only got LAN3 with 2.5G and never saw LAN4 with the second one. Info-center shows me both USB devices under USB-device. I wanted to make a bond out of them.

Hi, it's stated that you can bypass the "2 of same model adatpters issue" with this:

[Swimmer71]

OK, thanks. with this bash... command I could see LAN 4. Now I wanted to make a bond2 out of LAN3+4 (Bond1 is already with LAN1+2 with 1G each). This was not possible, it always returned to LAN3+4 with no Bond2.

When editing those files manually:

then restarting network with:
/etc/rc.network restart

I got Bond 2 for a very short time:

But after restart, LAN3+4 were back.

Any ideas how to set up Bond2 with 2x 2.5G adapters?