🖥️ Raspberry Pi 4 Model B — 2GB RAM | Home Assistant & Smart Home Server

The recommended single-board computer for Home Assistant. The Raspberry Pi 4 Model B brings a 1.5 GHz quad-core ARM Cortex-A72, 2GB LPDDR4 RAM, USB 3.0, Gigabit Ethernet, dual micro-HDMI, and USB-C power. Significantly faster than the Pi 3B — handles larger smart home setups, multiple dashboards, camera streams, and heavier add-ons. Pair with a ZBDongle-E or Dongle-LMG21 for full local Zigbee control.

Choose your Raspberry Pi:

Raspberry Pi 3B · 2GB Raspberry Pi 4B · 2GB

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Local Stock

Ships from Gauteng

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Quad-Core

1.5 GHz ARM

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USB 3.0

Gigabit Ethernet

⚡ Key Features

1.5 GHz Quad-Core ARM Cortex-A72 — 64-bit Broadcom BCM2711 SoC; ~3× faster than Pi 3B for Home Assistant, dashboards, and add-ons
2GB LPDDR4 RAM — enough for Home Assistant with multiple integrations and moderate add-on usage
USB 3.0 (2 ports) + USB 2.0 (2 ports) — faster data transfer for Zigbee dongles and SSD boot
True Gigabit Ethernet — full-speed wired networking; no more shared USB bus bottleneck
Built-In WiFi & Bluetooth 5.0 — 802.11ac dual-band (2.4/5 GHz) WiFi and BLE
Dual Micro-HDMI — supports dual 4K displays (4Kp60 + 4Kp30)
40-Pin GPIO Header — same pinout as Pi 3B; compatible with all HATs and accessories
MicroSD + USB Boot — boot from MicroSD or USB SSD for faster, more reliable operation
USB-C Power — 5V / 3A USB-C power supply recommended (not included)

🏠 Perfect For

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Home Assistant (Recommended)

The Pi 4B is the recommended platform for Home Assistant. Faster CPU, more RAM, and USB 3.0 mean smoother dashboards, quicker automations, and room for add-ons like Grafana, Node-RED, and ESPHome.

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Zigbee2MQTT + Matter

USB 3.0 ports for Zigbee dongles. Run Zigbee2MQTT or ZHA alongside Thread/Matter for next-gen device support. The faster CPU handles large Zigbee networks without lag.

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Camera & NVR Server

Stream and record from SONOFF cameras via Frigate or MotionEye. The Pi 4B's Gigabit Ethernet and USB 3.0 handle video processing that the Pi 3B struggles with.

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SSD Boot for Reliability

Boot from a USB SSD instead of a MicroSD card. USB 3.0 gives fast read/write speeds and eliminates SD card corruption — the #1 cause of Pi failures.

💡 Pro Tip: Boot from a USB SSD (not MicroSD) for the best Home Assistant experience. MicroSD cards wear out over time from constant database writes. A cheap 120GB SATA SSD in a USB 3.0 enclosure is faster and lasts far longer.

📋 Technical Specifications

Product	Raspberry Pi 4 Model B
SoC	Broadcom BCM2711 (64-bit)
CPU	1.5 GHz Quad-Core ARM Cortex-A72
RAM	2GB LPDDR4-3200
WiFi	802.11ac Dual-Band (2.4/5 GHz)
Bluetooth	Bluetooth 5.0 / BLE
Ethernet	True Gigabit (1000 Mbps)
USB	2× USB 3.0 + 2× USB 2.0
Video	2× Micro-HDMI (4K supported)
GPIO	40-pin header
Storage	MicroSD slot + USB boot support
Power	USB-C · 5V / 3A recommended
Dimensions	85.6 × 56.5 × 17 mm
In the Box	1× Raspberry Pi 4 Model B board

⚠️ Board only. MicroSD card, power supply, case, and cables are not included. You will need a USB-C 5V/3A power supply (not Micro USB), a MicroSD card or USB SSD, and optionally a case with fan/heatsinks (the Pi 4B runs warmer than the 3B).

❓ Frequently Asked Questions

Is 2GB RAM enough for Home Assistant?

Yes, for most users. 2GB handles Home Assistant with 50+ devices and common add-ons (ZHA, MQTT, Node-RED). If you plan to run heavy add-ons simultaneously (Frigate NVR, Grafana, Plex), consider looking for a 4GB or 8GB model.

What power supply do I need?

The Pi 4B requires a USB-C 5V/3A power supply. This is different from the Pi 3B which uses Micro USB. Using an underpowered supply causes throttling and instability — don't use a phone charger.

Should I boot from SD card or SSD?

SSD is strongly recommended. MicroSD cards are prone to corruption from constant database writes. A USB 3.0 SSD is faster, more reliable, and extends the life of your Home Assistant install significantly.

Can I use my Pi 3B accessories?

The GPIO header is identical, so all HATs work. However, the Pi 4B uses USB-C power (not Micro USB) and micro-HDMI (not full HDMI). You'll need new cables for power and display.