Smart Home Server B4 Ultra | Intel N150 (12GB LPDDR5 + 512GB SSD) – HAOS pre-installed

The ultimate foundation for your smart home

Want a single central hub where all your smart devices converge, without cloud lock-in or subscriptions? With the Smart Home Server B4 Ultra (based on the BMAX B4 Ultra hardware) and fully pre-installed Home Assistant OS, you get a compact yet powerful home automation hub, specially optimized for Dutch smart home users.

What problem does this Smart Home server solve?

Many consumers start with separate bridges and apps (Hue, Tado, Homey Bridge, Ikea, Tuya) and quickly lose track. With this mini PC as a central Home Assistant server, you can bundle all your devices, protocols, and automations in one place , completely under your control within your own network.

Key Benefits

• Modern Intel N150 processor : 13th generation (Twin Lake), 4 cores / 4 threads, up to 3.6 GHz turbo frequency and 6 MB cache with only 6 W consumption for 24/7 use – lightning-fast and energy-efficient.
• Super-fast LPDDR5 memory : 12GB of latest-generation LPDDR5 RAM that is significantly faster than DDR4, perfect for intensive Home Assistant configurations with dozens of integrations.
• 512GB NVMe SSD : Over 16x more storage than Home Assistant Green, lightning-fast load times, and reliable storage for databases, snapshots, backups, and add-ons like Zigbee2MQTT, ESPHome, and Docker containers.
• 4x USB ports for maximum expandability : 2x USB 3.0 and 2x USB 2.0 ports – ideal for Zigbee dongle (ZBT-2), Z-Wave stick (ZWA-2), Coral TPU and reserve for future expansion. USB 2.0 ports prevent interference that USB 3.0 can cause with Zigbee signals.
• Integrated Bluetooth 5.0 : Directly connect BT sensors such as Xiaomi thermometers, Govee air quality meters and RuuviTag sensors without additional dongles – ideal for temperature, humidity and plant monitoring.
• Gigabit Ethernet Connectivity : Stable 1000Mbps wired connection for reliable 24/7 operation of Home Assistant OS.
• VESA mounting bracket included : hang the server neatly out of sight in the meter cupboard, behind a monitor or in a patch cabinet – ideal for a tidy installation.
• Compact and silent design : dimensions only 125×112×44mm, about 243 grams light with active cooling that is barely audible during normal use.
• Open-source freedom : Home Assistant OS gives you complete control, local data storage, and the freedom to customize your smart home without vendor lock-in.

Comparison with Home Assistant Green

The Home Assistant Green is ideal as an entry-level model, but its capacity fills up faster with larger home automation setups. See the differences below:

Conclusion : The Green is a solid starter, but the B4 Ultra offers 3× more RAM of the latest DDR5 generation , 16× more storage , more powerful x86 processor, double the USB ports and more extensive connectivity – a future-proof investment.

USB connectivity: Built for advanced smart home setups

With 4 USB ports (2x USB 3.0 and 2x USB 2.0), the B4 Ultra offers significantly more expansion options than the Home Assistant Green. Here's why that's important:

• USB 2.0 for Zigbee : The 2× USB 2.0 ports are ideal for Zigbee dongles such as the Home Assistant Connect ZBT-2, as USB 2.0 does not cause RF interference in the 2.4 GHz Zigbee signal (a known issue with USB 3.0).
• USB 3.0 for high-speed devices : The 2× USB 3.0 ports are perfect for Z-Wave sticks (such as the HA Connect ZWA-2) and Google Coral TPU for local AI object detection in cameras.
• Future-proof : after Zigbee, Z-Wave and Coral TPU you still have a free port for SSD backups, an extra dongle (Matter/Thread) or other expansions.

Practical example of a complete setup: USB 2.0 port #1 for Zigbee dongle (ZBT-2), USB 2.0 port #2 spare/backup, USB 3.0 port #1 for Z-Wave stick (ZWA-2), USB 3.0 port #2 for Google Coral TPU – and you still have space!

Technical specifications (complete)

• Processor: Intel N150 (13th generation Twin Lake), 4 cores / 4 threads, up to 3.6 GHz turbo, 6MB cache, 6W TDP (energy efficient for 24/7 use).
• Memory: 12GB LPDDR5 RAM (soldered, faster than DDR4).
• Storage: 512GB NVMe M.2 2280 SSD (expandable with SATA 2.5" HDD/SSD).
• Graphics: Intel UHD Graphics, 24 execution units, up to 1000MHz, 4K@60Hz support.
• Network: 1× Gigabit Ethernet (RJ45, 1000Mbps), Bluetooth 5.0 for sensors and devices.
• Connections: 2× HDMI 2.0 (4K@60Hz, for setup/diagnostics), 1× USB-C (full-featured, data + video), 2× USB 3.0, 2× USB 2.0 , 1× 3.5mm audio jack, 1× RJ45 Gigabit LAN.
• Power supply: DC 12V/2A adapter included (approx. 6W idle, suitable for 24/7).
• Dimensions: 125 × 112 × 44 mm (ultra-compact).
• Weight: Approximately 300 grams.
• Cooling: Active cooling with fan (quiet during normal use).
• Operating system: Home Assistant OS (HAOS) 64-bit, fully pre-installed and tested.

Compatibility & home automation platforms

• Home Assistant OS : Full installation with access to the official Add-on Store, HACS community integrations, and supervisor.
• Home Assistant Voice (local) : Build your own private voice assistant with local processing—no data sent to Google, Amazon, or Apple. Supports wake words, Dutch language, and full integration with all your automations.
• Cloud voice assistants (optional) : Also connects with Google Assistant, Amazon Alexa, and Apple HomeKit if you want.
• Existing bridges : works seamlessly with Philips Hue, IKEA Dirigera, Somfy, Toon, Tado, Ubiquiti/UniFi and other systems via local APIs.
• Wireless protocols : Support Zigbee, Z-Wave, Matter and Thread via external USB dongles (such as Sonoff ZBDongle-E, Home Assistant SkyConnect ZBT-2/ZWA-2, Aeotec Z-Stick).
• Bluetooth sensors : direct connection with Xiaomi Mijia sensors, Govee hygrometers, RuuviTag temperature loggers and other BLE devices via integrated Bluetooth 5.0.
• AI & Computer Vision : Add a Google Coral TPU via USB 3.0 for local object detection in security cameras with Frigate NVR (person recognition, vehicle detection, etc.).
• Docker & Add-ons : Run advanced applications like Node-RED, Mosquitto MQTT broker, InfluxDB, Grafana, Frigate NVR and more.

Example of automation (Dutch situation)

Imagine: at sunset, your garden lights and facade spotlights automatically turn on, but only if you're not on vacation (detected by the presence of your smartphones). Combine this with your smart thermostat and P1 smart meter , so the heating turns down earlier in the evening when the dynamic energy price is high, while certain rooms (such as the baby's room) remain at a comfortable temperature . The B4 Ultra processes all this data locally, without delay or reliance on cloud services.

Ease of installation

• Plug and play : Unpack the server, connect the network cable, plug it in, and open your browser at http://homeassistant.local:8123 .
• No installation required : Home Assistant OS comes fully pre-installed and tested – no image flashing, no SD cards, no unstable storage.
• Onboarding wizard : Add your first devices in minutes using the simple wizard and start creating automations and dashboards right away.
• Migration : Easily restore backups from your old Raspberry Pi or Home Assistant Green.

Disadvantage (honesty first)

• For Zigbee, Z-Wave, Thread, and Matter , you need a separate USB dongle – just like with the Home Assistant Green. This offers flexibility : choose the best radio solution (for example, Zigbee2MQTT for maximum device support). Thanks to 4 USB ports, you can use multiple protocols simultaneously without a USB hub.

Warranty & support

At slimhuisje.nl, we believe a reliable smart home server is the beating heart of your smart home. That's why we offer:

• Initial configuration support
• Advice on suitable Zigbee or Z-Wave dongles and optimal USB port selection
• Migration help from Raspberry Pi or Home Assistant Green
• Dutch and English customer service for all your questions

✅ slimhuisje.nl – your technology partner for smart homes, we support you with every smart home adventure!