Anker PowerExpand 3-in-1 USB-C PD Hub – 100W Pass‑Through Charging, 4K HDMI, and 5Gbps USB‑A in a Travel‑Ready Aluminum Design

Table of Contents

1. Introduction

2. Key Specifications at a Glance

3. 100W Power Delivery Pass‑Through – Charge Your Laptop at Full Speed

4. 4K HDMI Output – Connect to External Monitors or TVs

5. High‑Speed USB‑A 3.0 Port – 5 Gbps Data Transfers

6. Ultra‑Compact and Travel‑Ready – Weighs Only 40g

7. Premium Aluminum Shell – Built‑in Heat Sink for Safety

8. Broad Device Compatibility – Works with MacBook, iPad Pro, Dell XPS, Surface Pro, and More

9. Important Compatibility Note – Requires DisplayPort Alt Mode

10. What’s in the Box

11. Conclusion

1. Introduction

The Anker PowerExpand 3-in-1 USB-C PD Hub (model A8339) is a compact, aluminum‑alloy expansion tool designed to turn a single USB‑C port into three essential connections. It is particularly favoured by professionals, students, and frequent travellers who need to connect external displays, transfer data from flash drives, and charge their laptop – all at the same time. Weighing only 40 grams, it is slim enough to slip into any laptop bag or even a pocket. The hub features a 100W Power Delivery (PD) input for pass‑through charging (providing about 85‑90W to your laptop while using 10‑15W for the hub itself), a 4K HDMI output at 30Hz for external monitors or TVs, and a USB‑A 3.0 port with data transfer speeds up to 5 Gbps. The premium aluminum shell acts as a heat sink, preventing overheating during heavy use. It is compatible with a wide range of USB‑C devices, including MacBook Pro/Air, iPad Pro, Dell XPS, and Microsoft Surface Pro 7 (provided the host device supports DisplayPort Alt Mode for video output). The Anker PowerExpand 3-in-1 is the perfect solution for eliminating dongle clutter and adding essential ports to modern ultrabooks.

For Android users, this hub works with USB‑C Android tablets and phones that support DisplayPort Alt Mode (e.g., Samsung DeX devices), integrating seamlessly with the Android ecosystem.

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2. Key Specifications at a Glance

3. 100W Power Delivery Pass‑Through – Charge Your Laptop at Full Speed

The Anker PowerExpand 3-in-1 features a 100W Power Delivery (PD) input port (USB‑C). When you connect a USB‑C charger (sold separately) to this input, the hub passes power through to your laptop while simultaneously powering the hub’s own operations. The hub itself consumes about 10‑15W, so your laptop will receive approximately 85‑90W of charging power. This is sufficient to fast‑charge most ultrabooks, MacBooks, and even some gaming laptops at near‑maximum speed. The pass‑through design means you do not lose a charging port when using the hub – a common frustration with some USB‑C adapters. You can connect your 100W or 65W charger to the hub, then the hub to your laptop, and still have access to HDMI and USB‑A. The hub does not generate excessive heat even at high power thanks to its aluminium heat‑sink design. The Power Delivery feature supports the USB‑C PD standard, which negotiates voltage and current based on your device’s requirements, ensuring safe and efficient charging.

4. 4K HDMI Output – Connect to External Monitors or TVs

The Anker PowerExpand 3-in-1 includes an HDMI port that supports video output up to 4K resolution at 30Hz (3840×2160). This allows you to connect your laptop or tablet to an external monitor, TV, or projector for presentations, video streaming, gaming, or extending your workspace. The 4K@30Hz output is ideal for watching movies, creating presentations, or working with high‑resolution content. Note that 30Hz is sufficient for most productivity tasks and video playback; for fast‑paced gaming or high‑refresh‑rate monitors, a 60Hz hub would be preferable. The HDMI port supports mirroring or extended desktop mode, depending on your operating system settings. It works with both macOS and Windows. To use the HDMI output, your host device must support DisplayPort Alt Mode over USB‑C (see section 9). The hub does not require any drivers; it is plug‑and‑play.

5. High‑Speed USB‑A 3.0 Port – 5 Gbps Data Transfers

The Anker PowerExpand 3-in-1 provides one USB‑A 3.0 port (also known as USB 3.2 Gen 1) with data transfer speeds up to 5 Gbps. This is ten times faster than USB 2.0 (480 Mbps). You can use this port to connect:

• USB flash drives – transfer files, documents, photos, videos quickly.

• External hard drives – for backups or additional storage.

• Mouse, keyboard, or other peripherals – though note that USB‑A ports on hubs are usually data‑only, not for charging high‑power devices (may provide basic power for mice/keyboards).

• USB‑C to USB‑A adapters – for connecting USB‑C devices.

The port also provides standard 5V/0.9A (4.5W) power for charging small devices like mice, keyboards, or some smartphones (slow charging). For data transfers, the speed is sufficient for large files; a 1GB file transfers in about 2 seconds (theoretical). The port is backward compatible with USB 2.0 and 1.1 devices. This adds essential expandability for ultrabooks that have only USB‑C ports, like the MacBook Pro and Dell XPS.

6. Ultra‑Compact and Travel‑Ready – Weighs Only 40g

Weighing just 40 grams (about 1.4 ounces) and roughly the size of a matchbox, the Anker PowerExpand 3-in-1 is one of the most portable USB‑C hubs available. Its slim profile allows it to fit into the small pocket of a laptop bag, a backpack, or even a jacket pocket. Unlike chunky docking stations, this hub is designed for travellers and mobile workers who need essential ports on the go. The integrated USB‑C cable (length not specified, but short enough to keep tidy) and the lightweight construction mean you can leave it permanently attached to your laptop’s cable or store it easily. The hub does not require external power (it draws power from the host or from the PD input). Its compactness does not compromise durability – the aluminium shell protects internal components.

7. Premium Aluminum Shell – Built‑in Heat Sink for Safety

The Anker PowerExpand 3-in-1 is encased in a premium aluminum alloy shell. This material serves two purposes: it gives the hub a sleek, professional look (matching Apple’s MacBooks), and it acts as an integrated heat sink. During heavy use – such as when charging a laptop at 100W while outputting 4K video and transferring large files – the hub can generate heat. The aluminum dissipates this heat efficiently, keeping internal components cool and safe. This extends the hub’s lifespan and prevents thermal throttling or damage. The shell is also resistant to scratches and corrosion. Anker includes a matte finish that resists fingerprints. The build quality is top‑notch, consistent with Anker’s reputation for durable accessories.

8. Broad Device Compatibility – Works with MacBook, iPad Pro, Dell XPS, Surface Pro, and More

The Anker PowerExpand 3-in-1 is compatible with a wide range of USB‑C devices, provided they support DisplayPort Alt Mode for video output. Compatible devices include:

• Apple MacBook Pro (2016 and later) , MacBook Air (2018 and later), MacBook (2015 and later)

• iPad Pro (2018 and later) with USB‑C (video output requires iPadOS and external display support)

• Dell XPS series (9360, 9370, 9380, 13/15 inch)

• Microsoft Surface Pro 7, Surface Laptop 3 and later

• Google Pixelbook, Chromebooks with USB‑C DP Alt Mode

• Samsung Galaxy S8/S9/S10/S20/S21/S22/S23 (DeX mode) and tablets

• HP Spectre, Lenovo Yoga, ThinkPad series with USB‑C DP Alt Mode

It also works with many USB‑C Android phones that support video output (check your device’s specifications). The hub is plug‑and‑play; no drivers needed. For Windows laptops, you may need to install the latest graphics drivers. The hub does not support Thunderbolt 3/4 features beyond USB‑C; it is a standard USB‑C hub.

9. Important Compatibility Note – Requires DisplayPort Alt Mode

To use the HDMI output on the Anker PowerExpand 3-in-1, your host device’s USB‑C port must support DisplayPort Alt Mode (DP Alt Mode) . This is a standard that allows USB‑C to carry video signals. Most modern laptops, tablets, and phones with USB‑C support DP Alt Mode, but not all. Check your device’s specifications or manual. If your device has a Thunderbolt 3/4 port, it supports DP Alt Mode. If your device only has USB‑C for charging and data (e.g., some budget laptops), video output may not work. The USB‑A and power delivery will still function, but HDMI will not. Anker provides this information to avoid confusion. If you are unsure, consult your device’s manufacturer.

10. What’s in the Box

When you purchase the Anker PowerExpand 3-in-1, you will receive:

• Anker PowerExpand 3-in-1 USB-C PD Hub (A8339)

• User manual

• 18‑month warranty card

Note: A USB‑C charger and HDMI cable are not included.

11. Conclusion

The Anker PowerExpand 3-in-1 USB-C PD Hub (A8339) is an essential accessory for anyone who uses a modern USB‑C laptop or tablet and needs to connect an external display, transfer data via USB‑A, and charge simultaneously. Its 100W pass‑through charging ensures your laptop stays powered, while the 4K HDMI output at 30Hz is perfect for presentations, extended workspaces, or media consumption. The 5Gbps USB‑A port connects flash drives, mice, and keyboards. The hub is ultra‑portable at just 40g, and the premium aluminum shell acts as a heat sink for safety. Compatible with a wide range of devices (MacBook, iPad Pro, Dell XPS, Surface Pro, and more) that support DisplayPort Alt Mode, it is a favourite among professionals and students.

For Android users with DP Alt Mode support (like Samsung DeX devices), this hub also works perfectly, integrating with the Android ecosystem. Whether you are working from a coffee shop, presenting in a boardroom, or studying in a library, the Anker PowerExpand 3-in-1 eliminates dongle clutter and adds essential ports in a travel‑ready design.

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