Raspberry Pi 4 Model B Official PSU USB-C 5.1V 3A UK Plug Black

Specifications

• Input Voltage: 96V AC to 264V AC
• Output Voltage: 5.1V DC (Tuned for RPi 4)
• Output Current: 3.0A Max
• Total Power: 15.3 Watts
• Connector: USB Type-C (Reversible)
• Plug Type: UK Standard (Type G) - 3 Pin
• Cable Length: 1.5 Meters (Captive/Fixed)
• Cable Wire Gauge: 18 AWG (High current capacity)
• Protection: Short Circuit, Over Current, Over Temperature
• Color: Black

Applications

• 24/7 Home Server: Essential for Pi-Hole, NAS, or Home Assistant setups where uptime is critical.
• Media Centers: Provides sufficient overhead for LibreELEC/Kodi setups powering external USB hard drives.
• Industrial Automation: The UK plug with its fused ground connection offers superior safety for factory floor deployments.
• Retro Gaming: Prevents "undervoltage" throttling during intensive emulation on RetroPie.

Project Evolution

      From Tinkering to Production

• Prerequisites: If you have been using a standard phone charger, you likely face the yellow lightning bolt icon or cannot use high-power USB peripherals.
• The Upgrade: Moving to this Official PSU unlocks the ability to overclock your Raspberry Pi 4 CPU and GPU safely. It also provides the necessary current headroom to attach power-hungry SSDs via USB 3.0 without needing a powered hub.
• Effort Level: Beginner – Plug and Play.
• Minimum Hardware: Raspberry Pi 4 Model B (any RAM variant).

Virtual Technician: Wiring & Safety

• Voltage Warning: This PSU outputs 5.1V, which is safe for the Pi 4. Do not use this on 3.3V-only development boards directly without regulation.
• Plug Compatibility: This is a UK (Type G) plug. It fits standard Indian 3-pin sockets that accommodate international plugs, or requires a simple travel adapter. It generally fits tighter and more securely than EU 2-pin plugs.
• Probots Secure-Transit: Power adapters are heavy. We wrap the transformer block in impact-resistant bubble layers to prevent casing cracks during shipping.

Package Includes:

• 1x Raspberry Pi 4 Model B Official PSU, USB-C 5.1V 3A UK Plug Black

Frequently Asked Questions (FAQ)

• Why is the output 5.1V instead of 5.0V?
  The 5.1V output compensates for voltage drop across the cable and connectors, ensuring exactly 5.0V reaches the Pi's PMIC even under heavy load.
• Will this work with the Raspberry Pi 3 or 3B+?
  No, the Pi 3 uses a Micro-USB connector. This PSU has a USB-C connector. You would need a USB-C to Micro-USB adapter (not recommended).
• Can I use this to charge my USB-C smartphone?
  Yes, technically it can charge phones at 5V/3A (15W), but it does not support USB-PD (Power Delivery) fast charging protocols (9V/12V).
• Does this power supply have an On/Off switch?
  No, the official PSU is designed for continuous operation. We recommend using an in-line USB-C switch cable if you need physical power control.
• Is the cable detachable?
  No, the 1.5m cable is captive (fixed) to the adapter. This reduces contact resistance and failure points compared to detachable USB cables.
• Will this fit in an Indian wall socket?
  The UK Type-G plug fits into most modern "Universal" Indian sockets. For older sockets, a simple travel adapter is required.
• Does this eliminate the "Low Voltage Warning"?
  Yes, provided your Pi 4 is not damaged, this PSU is guaranteed to eliminate the lightning bolt warning caused by insufficient power.
• Can I power an external HDD with this?
  Yes, the 3A capacity provides enough headroom to power the Pi 4 plus one mechanical USB HDD (up to ~900mA).
• Is it safe to leave plugged in 24/7?
  Yes, it is designed for continuous duty with thermal protection and flame-retardant housing.
• Does it support the Raspberry Pi 400?
  Yes, this is the recommended power supply for the Raspberry Pi 400 keyboard computer as well.
• What is the difference between the White and Black versions?
  Only the color. Specifications and internal components are identical.
• Does it have a fuse?
  The input side is fused internally. The UK plug itself often contains a replaceable fuse (typically 3A or 5A).
• Can I use a MacBook charger instead?
  MacBook chargers often negotiate voltage. While many work, they are expensive and overkill. Some "smart" chargers fail to negotiate with the dumb Pi controller. The Official PSU is foolproof.
• How long is the warranty?
  We offer a standard manufacturing defect warranty. Physical damage to the cable or pins is not covered.
• Is this compatible with the Raspberry Pi 5?
  The Pi 5 recommends a 27W (5V/5A) PSU. This 15W PSU will boot a Pi 5, but USB current will be limited, and performance may be throttled.
• Why is this more expensive than a generic charger?
  Generic chargers lack the clean filtration and 18AWG copper wire required for 3A stable transmission, leading to system crashes.
• Does it come with a USB-C cable included?
  Yes, the cable is integrated into the power supply unit.