2025-07-22 11:58 PM
Hi everyone,
I'm using the NUCLEO-H755ZI-Q board and I’m a bit confused about its Ethernet support.
The user manual (MB1363 Rev C) shows that both H745ZI-Q and H755ZI-Q support Ethernet using the LAN8742A PHY. It also lists jumpers and solder bridge settings for enabling RMII.
But when I checked my H755ZI-Q board, it looks like the PHY chip and RJ45 connector are not soldered. So now I’m not sure:
Does the H755ZI-Q actually support Ethernet out of the box?
Or is Ethernet only available on the H745ZI-Q version?
Would appreciate any help or clarification. Thanks!
2025-07-23 12:44 AM
Hi,
This is interesting, I am using H755ZI-Q as well and Ethernet works out of the box for me.
The user manuals might be a bit confusing since they cover multiple board versions. Have you tried testing a standard Ethernet example from CubeIDE just to confirm whether it is working or not for you?
2025-07-23 5:27 AM
Yes, it supports ethernet.
> PHY chip and RJ45 connector are not soldered
Show a picture please. If parts aren't soldered, they would fall off of the board.