The PCIe card. the M300 has space but it's a massive price difference sourcing in the UK. Trying to decide how much I want the LCD vs finding another board. I can't find any other N3700's with dual NIC, especially not Intel ones. The N3700 is so efficient (6W TDP), I doubt I'll notice much energy use increase.
Edit: @Dropkick Murphy beta.speedtest.net