Bought myself a Ugreen NAS: DXP4800 Plus
Saw a thread a few days ago on reddit I dont think i have a reddit user. if you have one and see this, feel free to forward the info.
It has two nics. One is a Intel Ethernet Controller I226-V and works out of the box, with a standard FreeBSD install (i used the live disc before installing, to verify the network) and one works atleast.

Let's start from the beginning. Plugged the network cables in, a keyboard, a bootable freebsd usb.
Then i found at a debian wiki that you need to press Ctrl+F12 (or Ctrl+F2) to enter the bios.
There you can disable the watchdog feature, since it seems it takes resources.
Saved the settings, then rebooted into the FreeBSD installer. (have not plugged in the harddrives yet. will be next post)
Made a default install, chose to name the zroot to zsystem instead.
Rebooted, logged in. All peachy.

But, the other network card... Unfortunately it is Aquatica Corp card. Even installing the driver, on 13.5-RELEASE did not pick it up. Trying to upgrade to 14.3-RELEASE as i write... 2.5GB is allright though, who needs 10GB :D

$ pciconf -l -v
igc0@pci0:4:0:0:  class=0x020000 rev=0x08 hdr=0x00 vendor=0x8086 device=0x125c subvendor=0x8086 subdevice=0x0000
    vendor     = 'Intel Corporation'
    device     = 'Ethernet Controller I226-V'
    class      = network
    subclass   = ethernet

none3@pci0:1:0:0:   class=0x020000 rev=0x03 hdr=0x00 vendor=0x1d6a device=0x04c0 subvendor=0x1d6a subdevice=0x0001
    vendor     = 'Aquantia Corp.'
    class      = network
    subclass   = ethernet
  

none3@pci0:1:0:0:	class=0x020000 rev=0x03 hdr=0x00 vendor=0x1d6a device=0x04c0 subvendor=0x1d6a subdevice=0x0001
    vendor     = 'Aquantia Corp.'
    device     = 'AQtion AQC113 NBase-T/IEEE 802.3an Ethernet Controller [Antigua 10G]'
    class      = network
    subclass   = ethernet