I have no photo of my PCB in hi-res, only bad quality. And I can't open box now, because I have no thermal paste. But I found photo of my PCB on other forum (all stickers, elements placement and form are the same - I compared with my bad quality photo). Photo in attachment.
I didn't check Ethernet on Libreelec, but BT+Wi-Fi work with the default firmwares embedded in the LE image. If you want I can check Ethernet on Libreelec image later.
When I spoke about SlimTV firmware, I mean full ROM - this my main ROM, which I use on EMMC. Wi-Fi, BT and Ethernet work good with it.