UGREEN Uno 100W 4-Port GaN Fast Charger | 45515B

Bring more personality and power to your charging setup with the UGREEN Uno 100W 4-Port GaN Fast Charger | 45515B, also identified as model X688.

Designed with UGREEN’s distinctive robot-inspired Uno styling, this compact charger combines 100W GaN fast charging, 3 USB-C ports, 1 USB-A port, a TFT smart display with animated status expressions, and magnetic feet. It can charge up to four devices at the same time, making it suitable for laptops, smartphones, tablets, gaming handhelds, power banks, controllers, earbuds, and other everyday electronics.

Key Features

• 100W Maximum Output – Powerful enough for compatible USB-C laptops and high-power devices.
• 4 Charging Ports – Includes 3 × USB-C + 1 × USB-A.
• USB-C1 Up to 100W – Ideal for laptops and other high-power USB-C devices.
• USB-C2 Up to 100W – Second high-power USB-C output.
• USB-C3 Up to 30W – Suitable for smartphones, tablets, handheld consoles, and accessories.
• USB-A Up to 22.5W – Maintains compatibility with traditional USB-A charging cables.
• GaN Charging Technology – High power density in a compact charger design.
• TFT Smart Display – Displays animated expressions according to charging status.
• Robot-Inspired Design – Part of UGREEN's playful Uno charging series.
• Magnetic Feet – Detachable magnetic feet complement the robot-style design and can attach to suitable metal surfaces.
• Charge Up to 4 Devices Simultaneously – One charger can replace several separate adapters.
• PD 3.0 & PPS Support – Compatible with a wide range of USB-C fast-charging devices.
• QC Fast Charging Support – Supports Quick Charge protocols on compatible devices.
• UFCS Support on USB-C1 – Expands fast-charging compatibility with supported devices.
• Universal 100–240V Input – Suitable for international travel with the correct plug/socket arrangement.
• 8-Layer Safety Protection – Designed with electrical and thermal protection against abnormal charging conditions.
• Wide Compatibility – Supports laptops, phones, tablets, gaming handhelds, watches, earbuds, and other USB-powered equipment.

Specifications

The exact 45515B / X688 specification confirms 3 USB-C ports, one USB-A port, 100W maximum total output and the individual power limits shown above.

Individual Port Output

USB-C1

The primary USB-C1 connection supports:

• 5V / 3A
• 9V / 3A
• 12V / 3A
• 15V / 3A
• 20V / 5A

Maximum output:

100W

It also supports PPS up to 5–21V / 5A on the current X688 / 45515B specification.

USB-C2

USB-C2 is also capable of:

Up to 100W

with supported profiles up to 20V / 5A.

Having two high-power USB-C outputs gives users more flexibility when connecting laptops, power banks, tablets, or gaming handhelds.

USB-C3

USB-C3 supports up to:

30W

with output profiles including:

• 5V / 3A
• 9V / 3A
• 12V / 2.5A
• 15V / 2A
• 20V / 1.5A

This makes it useful for compatible phones, tablets, handheld gaming devices, earbuds, and other accessories.

USB-A Up to 22.5W

The USB-A connection supports up to:

22.5W

with profiles including:

• 5V / 3A
• 9V / 2A
• 12V / 1.5A
• 10V / 2.25A

It is ideal for keeping older USB-A cables and accessories in your charging setup.

Smart Multi-Port Power Distribution

The charger has a 100W maximum total power budget, so output is automatically redistributed when multiple devices are connected.

Typical published distributions for the Uno 100W platform include:

The exact power allocation can depend on which ports and device combinations are connected, but the charger never provides 100W independently from every port at the same time.

Charge 4 Devices at the Same Time

With 3 USB-C ports and 1 USB-A port, the UGREEN Uno 100W can replace several separate wall adapters. UGREEN specifically markets it for charging four devices simultaneously.

A typical work setup could include:

• Laptop
• Smartphone
• Tablet
• Earbuds

A gaming setup could include:

• Gaming Handheld
• Smartphone
• Controller
• Gaming Headset

And a travel setup could include:

• MacBook
• Phone
• Smartwatch
• Power Bank

TFT Smart Display with Animated Emojis

One of the most distinctive features of the UGREEN Uno series is its TFT smart screen.

Instead of looking like a conventional charger, the X688 uses a robot-style face that displays different animated expressions according to its charging status.

This gives the charger a unique appearance on:

• Gaming Desks
• Office Desks
• RGB Setups
• Bedside Tables
• Streaming Stations
• Charging Stations

Important: The Screen Is Not a Watt Meter

The TFT display is primarily designed for animated charging-status expressions.

It should not be advertised as a real-time numerical wattage meter. UGREEN's own US product feedback also specifically notes that the display is expression-based rather than a numerical power readout.

This distinction is important for accurate ecommerce specifications.

Unique Robot Design

UGREEN designed the Uno charger around a playful robot concept.

Its body forms the robot while the TFT screen acts as its face and the removable magnetic pieces form its feet.

The result is a charger that functions as both a high-power charging accessory and a distinctive desktop accessory.

Magnetic Feet

The Uno's feet use magnets and can attach to suitable metal surfaces when removed from the charger. UGREEN specifically markets this feature as a way to help keep the feet from being misplaced.

They are primarily part of the robot-style design and should not be confused with a magnetic charging function.

The charger itself does not provide magnetic wireless charging.

GaN Fast-Charging Technology

The Uno uses GaN technology to deliver high charging power from a relatively compact body.

Gallium Nitride technology allows power components to operate efficiently at higher frequencies than many conventional silicon-based charger designs.

This helps UGREEN combine:

• Up to 100W output
• Four charging ports
• Safety electronics
• TFT display

inside a compact wall-charger format.

Broad Fast-Charging Protocol Support

The exact 45515B specification lists extensive charging compatibility.

USB-C1 Supports

• UFCS
• QC 3.0
• PD 2.0
• PD 3.0
• PPS
• Apple 5V/2.4A
• BC1.2
• AFC
• FCP
• SSCP

USB-C2 / USB-C3 Support

• QC 3.0
• PD 2.0
• PD 3.0
• PPS
• Apple 5V/2.4A
• BC1.2
• AFC
• FCP
• SSCP

USB-A Supports

• QC 2.0
• QC 3.0
• AFC
• FCP
• Apple 5V/2.4A
• BC1.2
• SSCP

Actual charging speed always depends on the connected device and cable.

8 Levels of Safety Protection

UGREEN describes the Uno 100W as using multiple levels of electrical protection, including protection against conditions such as:

• Overvoltage
• Overcurrent
• Overload
• Short Circuit
• Overtemperature

The charger uses dedicated power-management electronics to provide efficient and stable charging across multiple devices.

Universal 100–240V Input

The 45515B accepts:

100–240V ~ 50/60Hz, 1.8A Max.

This makes it suitable for international use when paired with the correct socket or travel adapter.

SKU 45515B is commonly sold as the EU-version Uno charger, which is especially relevant for markets using compatible European-style outlets.

Great for MacBook

The two 100W-capable USB-C outputs make the Uno particularly useful for USB-C MacBook charging.

UGREEN lists compatible MacBook Air and MacBook Pro families among the device support examples for 45515B.

Suitable for compatible:

• MacBook Air
• MacBook Pro
• USB-C Laptop Charging

The laptop determines how much power it draws.

Great for Windows Laptops

UGREEN also lists compatibility with devices from Lenovo, HP, Dell, Microsoft and other USB-C laptop families.

This includes compatible devices from ranges such as:

• Lenovo ThinkPad
• Dell XPS
• HP Spectre
• Microsoft Surface
• Chromebook

USB-C Power Delivery support must be available on the laptop.

Excellent for Gaming Handhelds

The Uno 100W is particularly useful for portable gaming setups.

UGREEN explicitly lists devices such as:

• Steam Deck
• Nintendo Switch
• ASUS ROG Ally

among its compatibility examples.

It can also be useful with other USB-C PD handhelds such as Lenovo Legion Go models when their charging requirements fall within the supported profiles.

Great for iPhone

The charger supports modern USB-C iPhones as well as older iPhone models when used with the appropriate USB-C to Lightning cable.

UGREEN's current compatibility information includes multiple generations of iPhone devices.