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The reason that bandwidth becomes important is due to the advent of 4K content. Due to the limited bandwidth of HDMI 1.4, only 24fps was possible at 4K resolution (3,840 x 2,160). Now, thanks to the extra bandwidth available in the 2.0spec, up to 60fps at 4K resolution is possible. This also allows you to view 144Hz at 1080p (1,920 x 1,080) through a HDMI 2.0 connection. An external display and video cable. The video cable and Surface adapter you need depends on which type of video port is on your external display. For example, if your external display has a DisplayPort, you will need a DisplayPort video cable and the Surface USB-C to DisplayPort adapter. Make sure the video cable is securely plugged into your external display or TV. On the other end, make sure the video cable is securely plugged into the adapter.
Chargers that don't have a standard USB Type-C connector might use a proprietary, nonstandard connector that your PC (or phone) doesn’t support. Make sure your PC, the external display, and the cable all support DisplayPort or MHL alternate modes. Dust or dirt inside the USB port on your device prevented the charger from being inserted correctly. The differences between single-link and dual-link refer to how much bandwidth the cable can carry. A single-link DVI-D or DVI-I cable can carry 3.96 Gbit/s, which tops out at 1,920 x 1,200 resolution. Dual-link, on the other hand, physically has extra pins on the connectors, allowing a maximum bandwidth of 7.92 Gbit/s and 2,560 x 1,600 resolution. Although DVI is still a common connection, it’s becoming dated, so if you want to output a very high resolution you’ll need to use HDMI or DisplayPort instead. The Alternate Mode feature must be supported on the PC or phone's hardware and software, and the connected device or dongle. You might also need a specific USB-C cable.The USB device might have limited functionality when connected to this port. Plug the USB device into a different USB port on your PC.
The DisplayPort Alternate Mode lets you project video and play audio on an external display that supports DisplayPort. To get 144Hz, you should ideally use DisplayPort as it’s the most capable out of the bunch. Here, DisplayPort 1.0-1.1a is able to output 144Hz at 1080p, while 1.2-1.2a can output 1440p at 144Hz, 1.3 outputs up to 120Hz at 4K, and 1.4 can output 144Hz at 4K using Display Stream Compression (DSC). It’s the best connection to display 144Hz.Under most circumstances, you can get away with using whichever cable you have lying around – and whatever works – but if you have more specific needs, such as carrying audio, displaying a higher resolution or outputting a higher refresh rate for gaming, you’ll need to be more discerning with your choice of cable. READ NEXT: What’s the difference between WQHD, QHD, 2K, 4K and UHD? DisplayPort: 4K at 144Hz with audio and video capabilities A PC with USB Type-C connectors has larger power limits. If the connector supports USB Power Delivery, it can charge even faster at greater power levels.
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