Triple Monitor Docking Station: Setup for 100W Charging
By Plugable #1 in Docking Stations and USB Devices ~ Plugable ... | Published: 2026-10-29
Category: How-to Guides
Learn how to set up a triple monitor docking station with 100W laptop charging, including cable checks, display settings, and power delivery tips.
Quick answer
To set up a triple monitor docking station with 100W charging, connect the dock to your laptop via the included USB-C cable, attach your monitors to the HDMI ports, and configure the display settings in your operating system. Ensure your laptop supports USB-C with DisplayPort Alt Mode and power delivery for full functionality.
Check your laptop's USB-C capabilities
Before you start, confirm that your laptop's USB-C port supports DisplayPort Alt Mode and Power Delivery. Many modern laptops do, but some older models may only support charging or data transfer. If your laptop lacks these features, the dock may still charge it but won't drive external displays.
Monitor compatibility and cable quality
For triple monitor setups, ensure each monitor has an HDMI input and that you use high-quality HDMI cables that support the resolution and refresh rate you need. Lower-quality cables can cause flickering or no signal. Also, verify that your monitors support the same resolution for a consistent experience across all screens.
Power delivery considerations
The dock provides 100W of power to your laptop, but this is shared with other functions. If you connect power-hungry peripherals, the charging speed may reduce. For best performance, connect the dock to a wall outlet and avoid using high-power USB devices simultaneously if you need fast charging.
Step-by-step setup for your triple monitor dock
- Connect the dock to power: Plug the dock's power adapter into a wall outlet and connect it to the dock. This ensures the dock can provide the promised 100W charging to your laptop. Check that the power LED on the dock lights up; if not, the dock won't charge or output video.
- Connect your laptop via USB-C: Use the USB-C cable that came with the dock to connect your laptop. Make sure the cable is fully inserted and that your laptop's USB-C port supports video output. If your laptop doesn't detect the dock, try a different USB-C port or check your laptop's manual.
- Attach monitors to HDMI ports: Connect each monitor to one of the dock's HDMI ports using a suitable HDMI cable. Power on the monitors and select the correct input source on each. Label your cables or ports to avoid confusion when troubleshooting.
- Configure display settings: On Windows, right-click the desktop and select Display settings. On macOS, go to System Preferences > Displays. Arrange the monitors to match your physical setup and choose the desired resolution and orientation. If a monitor isn't detected, click Detect in the display settings or restart your laptop.
- Test charging and peripherals: Check that your laptop shows it is charging. Connect your keyboard, mouse, and other USB devices to the dock's USB ports to ensure they work. If charging is slow, disconnect some USB devices or verify that your laptop supports 100W charging over USB-C.
Product spotlight
- Plugable USB-C Triple Monitor Docking Station, 100W Laptop Charging (B-Stock): The Plugable UD-3900PDZ supports up to three HDMI displays, 100W laptop charging, wired networking, and six USB 3.0 devices through a single USB-C cable. This dock simplifies your workspace by connecting multiple monitors and peripherals with one cable, while keeping your laptop charged.
Plugable USB-C Triple Monitor Docking Station, 100W Laptop Charging (B-Stock)
