I ordered one of the barebone 4-port CWWK N305's from Amazon when it was on sale for $286, mostly because I'm on gigabit fiber and my old Protectli is gigabit-only running bare metal Untangle/Arista and not able to max out my connection. My fiber modem has a 5GB port on it.
Received it in 4 days flat & shipping was via DHL. Ordered on a Saturday and had it by Tuesday. 'MURICA!
Mine came with a fan adapter but did NOT come with the x4 NVME adapter, just the regular H adapter.
Amazon ASIN is B0C274PGW1 in case anyone wants to take a look at what I bought. CWWK only lists the model as "N305", lol.
Slapped in a Samsung 980 Pro 1TB NVME w/heatsink and Crucial 32GB RAM, installed Proxmox, install OPNsense in a VM with LAN/WAN NICs passed through to it, created an LXC container to run docker containers (currently 16), and mapped an NFS drive from my NAS to back it up to and while that worked well, wanted to explore Proxmox Backup Server so disabled those two jobs. I get 1.2G full-duplex throughput now whereas on the Arista/Protectli it was ~800M.
Currently not running any "intrusion detection" stuffs just yet as I know that will eat into the bandwidth and I'm internally debating on whether or not to just spin up crowdsec on OPNsense and be done with it. Even have my VPNs (Nord and Proton) back up and running to route select traffic over when needed. Shutdown my old Lenovo Thinkcentre Proxmox box I had been testing out PM on for the last 5 months since it's not really needed and can be repurposed to test other things when needed.
Installed Proxmox Backup Server as a VM on the NAS and created backup jobs for the LXC and OPNsense VM and it backs those up and verifies them pretty quick. Also connected an external NVME-to-USB drive and set backup jobs for it that run 15 minutes after the backup server jobs just for extra redundancy as I did have a 500GB NVME lying around from when I upgraded the NVME in my PC. Everything backs up pretty quick and it emails me when it's done. I have a custom-rolled Protonmail Bridge VM that I just point everything to for ease-of-alerting.
No issues with things keeping cool on mine and I'm not running any fans on it. I did order 4 "laptop riser feet" to keep it an inch or so off the shelf to allow for better airflow but not planning on fans at this time. Didn't re-paste anything or even check the heatsink spacing and it's staying pretty cool, even when downloading big files over the VPN connection.
So far so good on this end at least, no crashes or connection drops even when saturating the bandwidth. OPNsense does do this weird thing where it instantly takes up 7GB of the 8GB of RAM I assigned to it but internally on the OPNsense dashboard it's barely hitting 1GB of RAM usage. I figure that's by design to speed things up.
Don't ask me about power consumption for that's my next trick - just need to research it a bit more since I want to see power consumption on my Home Assistant main page like I do with my UPS and server temp & utilization meters. I figure I'll need a Zigbee v3 compatible smartplug and Zigbee v3 USB dongle, but meh...I'm taking a break for a few days.
We'll see if it holds up to the standard set by my Untangle/Arista Protectli box did running 24/7/365 for 5+ years, where I literally set-it-and-forgot-it for most of that time except when upgrading the firewall software once or twice a year. I'd get an email saying an update was available and would just login and install it. Never had any issues with the Arista/Protectli combo at all, other than slower bandwidth when my 1G fiber connection was installed a month ago.
This is the way to use one original 12V power supply and split it for better power efficiency or replace the charger with PD module (and split it, optionally). 
