Fanless Silent Mini PC – Zotac ZBOX-CI331 nano – Perfect Media Server / HTPC / Home Assistant Host

My old desktop PC originally came with 16 GB of RAM, but as a 3D designer, I upgraded it significantly. That left me with these spare 2x8GB sticks, so I decided to build a quiet, fanless mini PC using them as a media server / TV-connected PC.

After the initial setup, I went back to using my Amazon Fire TV Stick instead, so this little machine has been sitting unused.

Now I'm decluttering a bit and putting it up for sale.

It's running an open bidding process with a Buy It Now price.

It will go to the highest bidder or to the first person who clicks Buy It Now at my target price. No lowball messages or "what's your minimum?" please—thanks!

Key Specs:

• Model: Zotac ZBOX-CI331 nano (fanless / passively cooled for completely silent operation)
• Processor: Intel® Celeron® N5100 (quad-core, up to 2.8 GHz burst, low 6-10W TDP – very efficient)
• RAM: 16 GB DDR4 SO-DIMM (2 x 8 GB Samsung modules)
• Storage: 240 GB Kingston SSD
• Operating System: Zorin OS 18 Pro (a beautiful, user-friendly Linux distro that looks and feels modern—great for media playback, browsing, light tasks, etc.)
• Suitable for Home Assistant: Excellent low-power, silent platform for running Home Assistant (HAOS, supervised, or in Docker/Proxmox). The N5100 + 16 GB RAM handles typical HA setups with dozens of integrations, Zigbee/Z-Wave sticks, Node-RED, databases, and add-ons smoothly—many users run similar fanless Intel mini PCs 24/7 for smart home control without issues.
• Fully working and ready to use right away (easy to wipe/reinstall HAOS if desired)

More details and official specs available on the Zotac website: search for ZBOX-CI331NANO.

This is a super compact, energy-efficient, and silent mini PC—ideal for:

• A home theater setup or media streaming (Plex/Jellyfin/etc.)
• Digital signage or secondary TV PC
• Home Assistant server (quiet 24/7 operation, low electricity use)
• General light tasks without any fan noise!

No fans = zero noise!