Overview
The Official Raspberry Pi 27W USB-C Power Supply is a high-quality, custom-engineered Power Delivery (PD) adapter built specifically for the demanding architecture of the Raspberry Pi 5. While standard chargers top out at 5V, this official supply pushes 5.1V at 5A. This extra headroom ensures that your Pi 5 doesn’t suffer from under-voltage brownouts when running high-intensity tasks, keeping your system completely stable.
Key Features
Full USB Peripheral Power: Unlocks the full 1.6A current limit for the Raspberry Pi 5’s USB ports, allowing you to run external 2.5-inch hard drives and SSDs without an external power hub.
Smart Power Delivery (PD): In addition to its custom 5.1V profile, it supports standard PD profiles (9V/3A, 12V/2.25A, 15V/1.8A), making it an excellent fast charger for smartphones, tablets, and laptops.
Industrial Grade Cable: Equipped with a thick, high-quality 1.2-meter 18AWG captive cable terminated with a robust USB Type-C connector.
Comprehensive Protection: Built-in hardware defense against short circuits, over-current spikes, and over-temperature issues.
Technical Specifications
| Feature | Specification |
| Compatibility | Optimized for Raspberry Pi 5 (Backward compatible as a standard PD charger) |
| Input Voltage | 100 – 240VAC (Global compatibility) |
| Output (Custom Profile) | 5.1V DC at 5.0A (27 Watts) |
| Output (Standard PD) | 9V/3A, 12V/2.25A, 15V/1.8A |
| Connector Type | USB Type-C |
| Cable Length | 1.2 Meters (18 AWG captive cable) |
| Plug Type | UK 3-Pin / EU 2-Pin (Depending on regional batch stock) |
Why standard chargers fail on the Pi 5
When the Raspberry Pi 5 firmware detects a standard 5V/3A (15W) power supply instead of the official 27W supply, it securely limits the total current sent to the four USB ports to just 600mA. Attempting to run a power-hungry project on a generic phone charger will result in warning icons, restricted speeds, or sudden reboots. The 27W power supply instantly boosts that USB limit to 1.6A.


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