Depending on your budget you could look at a Clearfog Pro from SolidRun. It has a Gbic port but only 6 ethernet ports. I've considered buying one 2 years ago but opted for a more tried and true solution (PCengines Apu with OPNSense)
The first open development kit SBC based on Marvell's new ARMADA 38X SoC. Achieve absolute flexibility with this powerful fog computing SBC. Discover the endless potential of the powerful ARM based boards of ClearFog. The family includes the ClearFog Pro and ClearFog Base. Harnessing the robust...
www.solid-run.com
[featured_image] Download Version 1.0 Download 273 File Size 1.36 MB File Count 1 Create Date September 27, 2018 Last Updated December 25, 2019 ClearFog Pro User Manual Attached Files FileActionsr-a38x-clearfog_pro-user_manual-rev-1.0.pdfDownload
developer.solid-run.com
- The single m.2 slot is SSD only and short (2242). It also has two msata/mpcie slots.
- The case you can buy from SolidRun won't allow mounting internal 2.5" drives and 1TB msata or short lenght m.2 drives have rather steep prices. You could mount the board in a bigger enclosure and use an msata to sata adapter, providing power could be an issue.
- I've no idea if a VDSL GBic would work and if yes what OS can support it.
If you are interested you can search the SolidRun forum, most of the above might be already answered there.
Btw. If you're living in europe (germany): Allnet VDSL2 Gbics are more readily available here.