USB C to Dual HDTV Adapter, Fophmo 4K@60Hz HDTV Splitter Extend Display for Dual Monitors, macOS Only Allows Mirror Mode, Windows Allows Multi-Monitor Display 3 Separate Screens for 100W PD,USB-A Port
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AI Verdict
A 0.05-ounce Fophmo USB-C hub with dual 4K@30Hz HDMI, 100W PD, and USB-A 3.0 for Windows extended displays, but macOS mirror-only.
This adapter is a strong fit for Windows users needing to extend their desktop across two 4K@30Hz monitors while also charging their laptop via 100W PD. However, its limitation to mirror mode for macOS users makes it a situational choice for Apple device owners.
If you need extended displays on macOS, look for USB-C hubs explicitly stating DisplayLink technology and driver requirements.
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Pros
- Outputs dual 4K@30Hz or single 4K@60Hz HDMI video.
- Provides up to 100W Power Delivery passthrough for charging.
- Includes a USB-A 3.0 port for 5Gbps data transfer.
- Plug and Play functionality requires no driver installation.
- Weighs only 0.05 ounces for portability.
- Windows devices support multi-monitor extended display.
Cons
- macOS devices are limited to mirror mode for dual displays.
- Requires host USB-C port to support DisplayPort Alt Mode.
- Specific HP Pavilion/Lenovo IdeaPad models and others are incompatible.
- Actual display resolution depends on host device, cables, and monitors.
- Power adapter for 100W PD is not included.
Dimension Scores
Its 0.05-ounce weight makes it highly portable, but the fixed cable length might limit placement flexibility.
As a passive adapter, it offers no physical adjustability or orientation options.
The product description doesn't specify materials, but a 12-month guarantee suggests standard durability for its price band.
No specific design details are provided, implying a standard, unobtrusive adapter form factor.
Best For
- Windows laptop users needing two external monitors for extended desktop.
- Users requiring 100W USB-C power delivery passthrough while using external displays.
- Home office setups needing basic display expansion and a single USB-A peripheral connection.
Not Recommended For
- macOS users who need independent extended displays across multiple monitors.
- Users with USB-C ports that do not support DisplayPort Alt Mode.
- Anyone needing more than one USB-A port or other port types like Ethernet or card readers.
Watch Out For
- macOS devices will only mirror the same content on both external displays, not extend them.
- Will not function if your laptop's USB-C port lacks DisplayPort Alt Mode support.
- Incompatible with several specific laptop models, including certain HP Pavilion and Lenovo IdeaPad series.
- Achieving 4K resolution requires HDMI 2.0 or higher cables and 4K-capable monitors and host device.
- Audio output might default to the laptop; requires manual selection of HDMI as the sound device.
Full Specifications
| ASIN | B0D9Y55X1D |
| Brand | Fophmo |
| Color | Grey |
| Item Weight | 0.05 ounces |
| Manufacturer | Fophmo |
| Special Feature | Plug and Play |
| Item model number | b7984fe4-5076-4e0e-814b-a42316cae1a9 |
| Compatible Devices | Laptops |
| Hardware Interface | USB Type C |
| Product Dimensions | 3 x 0.4 x 2.36 inches |
What Buyers Say
Many users find this adapter delivers on its promise for Windows extended displays, appreciating the convenience of dual HDMI and power delivery through a single USB-C port. The main point of confusion or frustration often revolves around the strict macOS mirror-only limitation, which catches some Apple users off guard despite being stated in the product details. Its plug-and-play nature is a plus, but compatibility with the host USB-C port's DisplayPort Alt Mode is a frequent hurdle.
“Ugh, my MacBook only mirrors the screens, I totally missed that part, but it works for my work laptop so I guess it's okay for Windows users.”
Common Praise
- Successfully enables extended dual monitor setups on Windows laptops.
- Provides 100W power delivery passthrough, simplifying cable management.
- Plug-and-play functionality works without needing to install drivers.
- Compact and lightweight design makes it easy to carry.
- Supports a single 4K@60Hz display for clear visuals.
Common Complaints
- macOS only mirrors displays, preventing independent extended desktops.
- Requires the host USB-C port to specifically support DisplayPort Alt Mode.
- Incompatibility with certain laptop models, leading to non-functionality.
- Users sometimes overlook the need for 4K-capable cables and monitors for optimal resolution.
- Audio sometimes defaults to the laptop, requiring manual adjustment.
Ownership Tips
- The adapter can get warm during prolonged use, especially with 100W PD and dual displays.
- Ensuring the USB-C cable from the laptop to the adapter is fully seated is crucial for stable video.
- The single USB-A port fills up quickly if you have multiple peripherals.
- Checking laptop compatibility for DP Alt Mode *before* buying is essential to avoid disappointment.
Frequently Asked Questions
Can I get extended displays on my MacBook with this adapter?
No, due to macOS system limitations, this adapter will only mirror the same content on both external displays when used with MacBooks.
Does this adapter require any drivers to work?
No, this adapter is plug-and-play and does not require any driver or software installation for video output.
Will this charge my laptop?
Yes, it supports up to 100W Power Delivery passthrough, but you'll need to connect your own USB-C power adapter to the hub's PD port.
My laptop has a USB-C port, but the adapter isn't working for video. Why?
Your laptop's USB-C port must support DisplayPort Alt Mode for video output. This adapter will not work with USB-C ports that only support charging or data.
Can I connect two 4K monitors at 60Hz?
No, it supports dual displays up to 4K@30Hz. For a single HDMI output, it can support up to 4K@60Hz.
Buying Guide
When picking a USB-C display adapter, you need to know what your laptop's USB-C port can actually do. Not all USB-C ports are created equal; some are just for charging or data, while others support video output (DisplayPort Alt Mode). If you have a Mac, be aware that many adapters like this one will only mirror your display, not extend it to separate screens.
DisplayPort Alt Mode (DP Alt Mode)
This means your USB-C port can send video signals. Think of it like a special lane on the highway for video data. If your port doesn't have this, no video will come out.
4K@30Hz vs. 4K@60Hz
This refers to the resolution and refresh rate. 4K is super sharp, and 60Hz means the image updates 60 times per second, making motion smoother. 30Hz is fine for static work, but 60Hz is better for anything with movement.
100W Power Delivery (PD)
This allows the adapter to pass through a lot of power to charge your laptop. It's like having a fast-charging outlet built into the adapter, so you only need one cable to your laptop.
Alternatives
If you need extended displays on a MacBook or have a USB-C port without DP Alt Mode, search for adapters that explicitly mention 'DisplayLink' technology, as these use software drivers to bypass hardware limitations.
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