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Rindi - Deleted my previous response. It didn't see that another display was plugged in with DVI; with HDMI, though, it finally started seeing the external monitor. &nbsp;I didn't notice it had picked that up until just now.<br />
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I've tried changing resolutions, duplicating/extending, etc. Each time yields the same results - when set to the input I'm using, the Surface turns black for a split second and then goes back to the Windows desktop, the external monitor goes back to my PC.<br />
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EDIT: Played around a bit longer and finally got it to work with the HDMI! Sadly, though, we don't have many HDMI-capable monitors. We do have plenty of DVI. I have an HDMI-to-DVI cable, as mentioned, but it refuses to recognize the monitor with those. Any advice for that route?
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The monitor finally picked up! Thanks! Got it to work on DVI, too. Suspect the first monitor I tried it on had some issue preventing it from switching inputs.
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We've got 10 Microsoft Surface Pros; with some of those, we want to use external monitors. We've attempted to do this with a couple of the units using a MS Surface Docking Station and a display adapter. No matter whether we plug directly into a monitor's HDMI port with a standard cable or the DVI using an HDMI-to-DVI cable, it doesn't work. When we set the external monitor to the input we used, the Surface flickers black for a second as though it recognizes the monitor, but the Windows desktop immediately comes back. Nothing ever shows up on the external monitor. <br />
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Would love some help with this one.
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We've got 10 Microsoft Surface Pros; with some of those, we want to use external monitors. We've attempted to do this with a couple of the units using a MS Surface Docking Station and a display adapter. No matter whether we plug directly into a monitor's HDMI port with a standard cable or the DVI using an HDMI-to-DVI cable, it doesn't work. When we set the external monitor to the input we used, the Surface flickers black for a second as though it recognizes the monitor, but the Windows desktop immediately comes back. Nothing ever shows up on the external monitor. 

Would love some help with this one.

Using a Microsoft Surface 4, Docking Station, and Display Adapter to Connect to External Monitor

A monitor or a display is an electronic visual display for computers, usually comprised of the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors used a cathode ray tube (CRT) about as deep as the screen size. They are connected to the computer via VGA, DVI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors and signals.

Displays / Monitors

Windows 10 is a personal computer operating system featuring the "universal application architecture" (UAP); apps can be designed to run across multiple devices with nearly identical code, including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and HoloLens. Windows 10 also includes a virtual desktop system, a window and desktop management feature called Task View, the Microsoft Edge web browser, support for fingerprint and face recognition login, voice-based search (Cortana), new security features for enterprise environments, and DirectX 12 and WDDM 2.0 to improve the operating system's graphics capabilities for games.

Windows 10

A tablet computer is a mobile computer with a touchscreen display, circuitry, and battery in a single device. Tablets come equipped with sensors, including cameras, a microphone, and an accelerometer, and the touchscreen display uses the recognition of finger or stylus gestures replacing the usage of the mouse and keyboard. They usually feature on-screen, pop-up virtual keyboards for typing. Tablets may include physical buttons for basic features such as speaker volume and power, and ports for network communications and battery charging. Tablets are typically larger than smartphones or personal digital assistants.