How to Add Dual Monitors with a USB Graphics Adapter

Quick answer

To add dual monitors using a USB graphics adapter, choose a USB-C or USB 3.0 adapter with DisplayLink technology, install the driver, connect your displays, and configure the layout in your operating system's display settings.

Step-by-step setup guide

1. 1. Choose the right adapter for your laptop's USB port: If your laptop has USB-C with DisplayPort Alt Mode or Thunderbolt, a USB-C adapter like the USBC-6950M can deliver 4K 60Hz on both monitors. If your laptop only has USB-A ports, use a USB 3.0 adapter like the Plugable USB 3.0 Dual Display Adapter. Common mistake: buying a USB-C adapter for a laptop that only has USB-A ports, or vice versa. Check your laptop's port type before purchasing.
2. 2. Install the DisplayLink driver before connecting the adapter: Go to the DisplayLink website or the product support page to download and install the latest driver for your operating system (Windows, macOS, or ChromeOS). Restart your laptop if prompted. Common mistake: plugging in the adapter before installing the driver. This can cause the device to not be recognized or work incorrectly.
3. 3. Connect the adapter to your laptop and attach the monitors: Plug the adapter into a USB port on your laptop. Then connect your monitors to the adapter using HDMI or DVI cables (depending on the adapter's ports). The monitors should power on and be detected automatically. Checkpoint: if a monitor is not detected, try a different cable or port on the adapter.
4. 4. Configure the display layout in your OS settings: On Windows, right-click the desktop and select Display settings. On macOS, go to System Preferences > Displays. On ChromeOS, go to Settings > Device > Displays. Arrange the monitors to match your physical setup (extend, mirror, or primary display). Common mistake: not adjusting the resolution. Make sure each monitor is set to its native resolution for the clearest image.
5. 5. Test and adjust for performance: Open a few applications and drag them between monitors to confirm smooth operation. If you notice lag, reduce the resolution on one or both monitors, or close background apps that use heavy graphics. Checkpoint: for best performance, avoid running full-screen video or games on the USB-connected monitors simultaneously with heavy CPU tasks.

Product facts

• Plugable Dual Monitor USB-C to HDMI Adapter, 4K 60Hz: Add two 4K 60Hz HDMI displays to your MacBook M1 through M5, Windows laptop, or ChromeOS device from a single USB-C port using DisplayLink technology. This makes it a practical solution for multitasking, hybrid work, creative projects, and productivity-focused desk setups without needing to replace your laptop.

  

• Plugable USB 3.0 Dual Display Adapter for Multiple Monitors with Gigabit Ethernet: Equipped with both HDMI and DVI-I ports, this dock supports either one HDMI display up to 2560x1440 @ 50Hz or dual 1920x1200 displays, and adds Gigabit Ethernet. It's a good fit for older laptops with USB-A ports that also need a wired network connection, saving a USB port and simplifying your desk.