Raspberry PI 4 B 2GB BCM2711 Arm Cortex-A72 RAM Single Board Computer

Quick Introduction: Experience desktop-level performance in a credit-card-sized package. The Raspberry Pi 4 Model B (2GB) is a complete reimagining of the world's most popular single-board computer. With a significant speed boost over the Pi 3B+, true Gigabit Ethernet, and USB 3.0 connectivity, this board is no longer just for tinkering—it's powerful enough to replace your desktop PC, run dual 4K monitors, or serve as a high-speed network-attached storage (NAS) hub.

Detailed Specifications

• Processor: Broadcom BCM2711, Quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz.

• Memory: 2GB LPDDR4-3200 SDRAM.

• Connectivity: * 2.4 GHz and 5.0 GHz IEEE 802.11ac wireless, Bluetooth 5.0, BLE.

  • Gigabit Ethernet (True speed, not over USB 2.0).

• Video Output: 2x Micro-HDMI ports (supports up to 4kp60).

• USB Ports: 2x USB 3.0 ports; 2x USB 2.0 ports.

• Power Input: 5V DC via USB-C connector (min 3A recommended).

• GPIO: Standard 40-pin GPIO header (fully backwards compatible).

• Storage: Micro-SD card slot for loading the operating system and data storage.

Quality Advantage & Differentiation: Why choose the Pi 4?

1. True Desktop Replacement: The switch to Cortex-A72 cores means the Pi 4 is approximately 3x faster than the Pi 3B+. Web browsing is snappy, and applications load instantly.

2. Dual 4K Support: Drive two independent 4K monitors for a massive digital signage setup or a productivity workstation.

3. USB 3.0 Speed: Transfer data to external hard drives 10x faster than previous models, making it a viable media server or NAS.

Key Applications & Usage

• Home Automation Hub: Run Home Assistant or OpenHAB with plenty of RAM headroom.

• Retro Gaming Console: Emulate N64, Dreamcast, and PSP games smoothly with RetroPie or Recalbox.

• Media Centre: Stream 4K video content using LibreELEC (Kodi).

• Network Blocker: Run Pi-hole to block ads across your entire home network via Gigabit Ethernet.

What's Included & Required

• Included: 1x Raspberry Pi 4 Model B (2GB RAM) Board.

• Required: 5.1V 3A USB-C Power Supply, Micro-SD Card (Class 10+ recommended), Micro-HDMI Cable.

Helpful Tutorials & Resources

• Video Review: Raspberry Pi 4 Model B Review - In-depth look at specs and performance.

• Setup Guide: Raspberry Pi 4 Setup Tutorial - Step-by-step guide for beginners.

• Datasheet: Raspberry Pi 4 Model B 2GB RAM_Datasheet

The "Virtual Technician" Support Panel

• ⚠️ CRITICAL SAFETY WARNING:

  • Power Supply: The Pi 4 requires a 5.1V 3.0A USB-C power supply. Using a standard phone charger (often 2A or unstable voltage) will cause "Under Voltage" warnings (lightning bolt icon), throttling, and SD card corruption.

  • Heat Management: The Pi 4 runs HOT. We strongly recommend using a heatsink case or active cooling fan, especially if the board is enclosed.

  • GPIO Logic Level: All GPIO pins are 3.3V Logic. Connecting 5V sensors directly to the GPIO pins will permanently damage the CPU. Use a Logic Level Converter.

• Pinout Reference (Standard 40-Pin Header):

  • Pin 1: 3.3V Power (Max 50mA draw)

  • Pin 2/4: 5V Power (Direct from USB-C)

  • Pin 6/9/14/20/25/30/34/39: Ground (GND)

  • Pin 3/5: I2C (SDA/SCL) - Requires pull-up if used with long wires.

  • Pin 8/10: UART (TX/RX) - Console access.

• Troubleshooting: No video? Ensure you are using the Micro-HDMI port closest to the USB-C power input (HDMI0) for the primary display. The Pi defaults to HDMI0 for boot text.

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