Tech Specs USB-C To Host USB 5Gbps Type-C, DisplayPort Alternate Mode 1.2, USB Power Delivery HDMI 1 Up to 4K UHD (3840x2160) at 30Hz refresh rate, lower resolutions up to 60Hz refresh rate HDMI 2 & HDMI 3 Up to 1080P (1920x1080) at 60Hz refresh rate with DisplayLink USB graphics technology 6x USB 5Gbps USB Standard-A 5Gbps ports 1x 3.5mm Audio TRRS Headset port, supports stereo audio and mono microphone, or stereo speakers/headphones Do I need to install software in order to use the device? Yes, DisplayLink software is required for the UD-3900PDZ for full functionality. Manual installation is required for macOS, Windows installation is typically automatic. We recommend installing the latest DisplayLink software for the best performance. When installing DisplayLink software on my Mac, why is it necessary to grant ‘Screen Recording’ permission? macOS requires "Screen Recording" for the DisplayLink driver to work properly. Approving it enables the driver to send data over USB from your computer to the DisplayLink-powered display. No data, images, or pixels are being stored or recorded. Does this dock allow for three displays even on base Apple M-Series Macs? Yes. Enabled by DisplayLink technology, UD-3900PDZ can connect three displays even if the computer supports only one display output on its own. DisplayLink Manager installation required on Mac. Which USB-C port on the dock can be used to connect my computer? The USB-C port on the rear of the dock is dedicated for connecting your laptop. The front port is a hub port only, so it doesn’t work to connect a computer to the dock. Why aren’t all three displays connecting to my dock? Please confirm your laptop’s USB-C port supports video output (Alt mode), that the docking station is connected to the computer with the USB-C data cable provided with this dock, and that you have the DisplayLink driver/software installed. Plugable Docking Station's UD-3900PDZ Add to Cart UD-ULTCDL Add to Cart UD-ULTC4K Add to Cart UD-6950PDZ Add to Cart Customer Reviews 4.3 out of 5 stars 842 4.4 out of 5 stars 1,360 4.2 out of 5 stars 1,660 4.1 out of 5 stars 561 Price $149.95$149.95 $169.95$169.95 $229.95$229.95 $189.95$189.95 # of Displays 3 3 3 3 Video Ports 1x HDMI 1.4, 2x HDMI 1.3 1x HDMI 1.4, 2x HDMI 1.3 3x HDMI 2.0 or DisplayPort 1.2 3x HDMI 1.4,3x DisplayPort 1.2 Max Resolutions Supported 1x 4K 30Hz, 2x 1920x1200 60Hz 1x 4K 30Hz, 2x 1920x1200 60Hz 3x 4K 60Hz 3x 4K 60Hz USB 3.0 Ports 2x Front, 4x Rear 4x Rear 4x Rear 2x Front, 4x Rear Downstream USB Type-C Ports — 1x Front 1x Front — Laptop Charging Yes - 100W Yes - 100W (96W Certified) Yes - 100W (96W Certified) Yes - 100W Laptop Connection USB4, Thunderbolt 4 / 3, USB-C USB4, Thunderbolt 4 / 3, USB-C USB4, Thunderbolt 4 / 3, USB-C USB4, Thunderbolt 4 / 3, USB-C