Dell’s U2520D liquid crystal display, a high-end digital series is available. In addition to the 25-inch desk size, the USB Type-C interface (DisplayPort Alt-Mode & USB PD: up to 90W) dramatically enhances convenience. In particular, the compatibility with the current mobile notebook PC is outstanding, and it enables a new way of using a new generation display.
Supports USB Type-C connection in addition to HDMI and DisplayPort
It can be said that the LCD interface has wholly transitioned from analog to digital. Among the digital technologies, HDMI and DisplayPort, which are currently the mainstream, are moving to USB Type-C in the future. The U2520D is a liquid crystal display that quickly supports this USB Type-C input. USB Type-C has several functions other than the data transfer, one of which is “Alternate Mode” (Alt-Mode). Alt-Mode can pass a different signal than the USB data signal. VESA is formulating DisplayPort Alt-Mode. It sends DisplayPort signals through a USB Type-C cable.
Even though VESA is formulating DisplayPort Alt-Mode, it is currently necessary to mix DisplayPort signals with the USB Type-C terminal on the PC or smartphone side. Therefore, at the moment, not many devices are compatible. However, most laptops that support Thunderbolt 3 that are compatible with USB Type-C also support DisplayPort Alt-Mode. Also, the NVIDIA GeForce, RTX 20 series graphics cards, installed in gaming PCs, and other devices support USB Type-C output as a reference design.
USB Type-C has a function called USB Power Delivery (USB PD) in addition to data and DisplayPort Alt-Mode. It is a high-level USB charging standard that can charge not only small devices such as smartphones and tablets with 5/9/12/15 / 20V x max—5A but also various devices such as mobile notebook PCs. The U2520D also supports USB PD power up to 90W.
And, of course, data is also supported as USB. The U2520D’s USB hub function has four downstream ports. The downstream port can be connected to USB devices such as USB HDDs, wired LAN adapters, printers/scanners, etc. When you return home and join the U2520D to your mobile laptop with a single USB Type-C cable, you can use the display, charge it, and use USB-connected devices.
Let’s look at the U2520D interface again.
The U2520D interface is on the back (downward) and left side. The back side is 100V AC input, HDMI 2.0, DisplayPort 1.4, USB Type-C (DisplayPort 1.4 compliant), DisplayPort (for output), audio output, USB 3.0 (downstream) x 2. The left side is equipped with USB Type-C connector (downstream) × 1, USB 3.0 (downstream, charging compatible) × 1.
Finally, the audio output of the U2520 is for extracting audio signals from HDMI and DisplayPort (including USB Type-C). The U2520D does not have a built-in speaker. Therefore, to enjoy the sound, headphones or speakers are connected. However, since the terminal is on the back, there is no problem for speakers, but it may not be suitable for headphones that can be easily attached or detached. The sound device that can be separated may be connected to the terminal of the PC body, or the style of connecting the USB connection to the side terminal will be suitable.
