What to check before buying
Decide how the laptop will drive two separate screens, then check that the scanner has a compatible downstream USB data port and an adequate power arrangement.
USB-C video hub
Choose it when: The intended laptop port supports the hub’s required video mode and the laptop can drive your two-screen configuration natively.
Check carefully: Two video sockets do not establish independent display support; Anker says its A210B mirrors content across external monitors on macOS.
DisplayLink dock
Choose it when: A compatible USB-A or USB-C connection is needed because the laptop’s native video route does not meet the two-screen requirement.
Allow for: Compatible DisplayLink software, plus a separate laptop charger if the chosen dock does not provide laptop charging.
| Concern |
What to check |
Who this matters to |
| Two separate screens |
Match the laptop and dock’s stated dual-display mode to both monitors’ inputs, resolution and refresh rate; confirm extension rather than mirroring. |
I need different work on each screen, not the same picture twice. Around 42% of consumers put usable dual-screen output first. |
| Laptop and OS compatibility |
Check the exact host port for DP Alt Mode if the hub requires it, or confirm DisplayLink software support for the chosen operating system. |
If my laptop has limited video output or I use a Mac, I need to know which connection and display mode will work. Compatibility comes first for around 33% of consumers. |
| Scanner ports and power |
Match the scanner cable to a downstream USB data port; check the dock’s power arrangement and its stated laptop charging output if charging matters. |
I need the scanner to remain connected while both screens are in use, especially if it draws power through USB. Roughly 25% of consumers prioritise the scanner and peripheral connection. |
Joybuy products
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Frequently asked questions
Can any USB-C hub run two separate monitors and a scanner?
No: the laptop and hub must support the required two-screen mode, and the hub needs a downstream USB data port that matches the scanner. A USB-C video hub may require DP Alt Mode on the laptop; a compatible DisplayLink dock is another route but requires its software.
What should Mac users check before choosing a dual-monitor hub?
Check the exact Mac model’s supported external-display configuration and the hub’s stated macOS display mode. Apple says display support varies with the model, resolution and refresh rate; Anker states that its A210B mirrors content across external monitors on macOS.
How do I arrange the screens after connecting a dock to Windows?
Open Settings, then System and Display to identify and arrange the connected screens, as described by Microsoft Support. If a screen is not detected, check its connection and the dock’s compatibility with the laptop.
Why might a scanner stop working through a dock?
A connection or power issue is one possibility, particularly for a USB-powered device. Test the scanner directly on the computer, then check its cable, the dock’s USB port and whether the setup needs external power.