USB-C Docking Station vs Hub: Which Supports 4 Monitors
By Plugable #1 in Docking Stations and USB Devices ~ Plugable ... | Published: 2026-10-24
Category: Comparisons
Need four external displays? A USB-C hub alone can't do it. Learn why a quad-monitor docking station is the only practical route for a 4 monitor setup.
Quick Answer
For a true 4 monitor setup, you need a quad-monitor USB-C docking station like the Plugable UD-3900C4, not a USB hub. A standard USB hub only expands ports; it cannot add video outputs.
Why a USB Hub Can't Drive Four Monitors
A USB hub's job is to multiply a single USB port into several, letting you connect peripherals like keyboards, mice, and dongles. It does not process video signals or add display outputs. Even a hub with video ports typically relies on the host's built-in graphics, which usually supports only one or two external displays.
For four independent extended displays, you need a dock that combines multiple display technologies. The Plugable UD-3900C4, for example, pairs DisplayLink with MST (Multi-Stream Transport) to deliver four 1080p displays at 60Hz over a single USB-C connection. That's a fundamental capability no USB hub offers.
The Trade-Off: Cost and Complexity vs. Port Expansion
A quad-monitor docking station costs significantly more than a simple USB hub. The UD-3900C4 is priced around $159, while a basic 2-port USB 2.0 hub costs under $12. The extra expense buys you the video processing hardware and the convenience of one-cable connectivity for multiple displays and peripherals.
If you only need to add a few low-power accessories to a single USB-A port, a hub is the practical, budget-friendly choice. But if your goal is a multi-monitor workstation, a dock is not a luxury—it's the only solution that works.
Dock vs. Hub: The Trade-Offs at a Glance
- Video Outputs: A USB hub has no video processing capability. A quad-monitor docking station like the UD-3900C4 provides four extended 1080p displays via DisplayLink and MST. Check your laptop's USB-C port supports DisplayLink or MST before buying a quad-monitor dock.
- Cost: Expect to pay around $159 for a quad-monitor dock versus under $12 for a 2-port USB hub. The dock's price reflects the built-in video hardware. If your budget is tight but you need four monitors, a dock is a necessary investment—there's no cheaper workaround.
- Port Expansion: A USB hub gives you extra USB-A ports for low-power peripherals. A dock also offers additional ports, but its primary value is the multi-display capability. If you only need more USB ports, a hub is the simpler and cheaper option.
Two Products, Two Very Different Jobs
- Plugable USB-C Docking Station for 4 Monitor Setup, 96W-TAA Compliant: The Plugable UD-3900C4 is the only quad monitor docking station combining DisplayLink and MST Alt mode technologies to deliver seamless four display expansion over USB-C, driving four extended 1080p displays at 60Hz. This is the hardware you need for a true 4 monitor setup—a single USB-C cable connects your laptop to four external displays without sacrificing performance.
Plugable USB-C Docking Station for 4 Monitor Setup, 96W-TAA Compliant - Plugable USB 2.0 2-Port Hub/Splitter: The Plugable USB 2.0 2-Port Hub expands a single USB port into two for everyday business peripherals like keyboards, mice, scanners, or USB dongles. It's a low-cost, space-saving way to add a couple of USB-A connections, but it won't add any video outputs—so it's not for multi-monitor use.
Plugable USB 2.0 2-Port Hub/Splitter
Which Should You Choose?
Best for
- Professionals who need four extended 1080p displays for trading, design, or data-heavy workflows
- Users with a USB-C laptop that supports DisplayLink or MST and want a single-cable docking solution
Not for
- Users who just need a couple of extra USB-A ports for peripherals—a simple USB hub is enough
- Anyone expecting a USB hub to magically add video outputs—it won't
