Dec740 connected to a USW-Pro-8-PoE

[DEC670airp414user]

I am going to replace my Dec670 soon.

thinking about going with the above hardware.     for the 10Gb connectivity part, I am reading all I need is a single UACC-DAC-SFP10-0.5M.  which is listed as certified to work.

can anyone confirm that is all that is needed for me?

[pfry]

Confirm, no. But I'd bet a fair pile of money on it, assuming the length is what you need. Funny, I took a look at pricing (for the cable) and got all sorts of way too expensive results, but the Ubiquity store price was quite reasonable.

[DEC670airp414user]

what in addition to https://store.ui.com/us/en/category/accessories-modules-fiber/collections/accessories-pro-direct-attach-cables/products/10gbps-direct-attach-cable?variant=uacc-dac-sfp10-1m

would I need for 10G Lan purposes. 

port 9 on the switch which is SPF+  that cable would go to X0 on the OPnsense router.   

[pfry]

what in addition to [...]

For connecting the firewall to the switch, nothing at all. I wasn't critiquing your choice of cable - I was just attempting to avoid endorsing a particular length, as the only critical element is "long enough", and that's your choice.

Heh. Someone here must have an identical setup to your planned one. Just for the paranoia endorsement.

My own is random PC with Intel x710, with random TAA DACs to two servers, also with x710s. My (Netgear) switch uplink is fiber, as it's in another room - a bit far for a DAC. I had to get an Intel ID'd optic (I got genuine Intel, surplus) for the uplink; the DACs don't require any branding with the Intel cards. Not a concern with your setup as described.

[meyergru]

I have never encountered any compatibility problems with 10G DAC cables.