Traditionally, the mess was somewhat the other way around, with the same signal, but a lot of different connectors (SCSI, both parallel and serial, is notorious for this). USB-C has four high speed lanes that can carry a wide variety of signals, which is really nice, but the problem is there are no requirements to show or indicate to the user what the capabilities are using colors or icons. I have been a columnist/editor for a computer magazine in the nineties, so I have seen a lot of connectors, trust me. The USB-C connector is the biggest mess I have seen in computing connectors. The other answer is fully correct, but let me elaborate on why it is necessary. Not all USB-C connectors support DisplayPort, so it is a very helpful marking to see “printed” on a device. Is a DisplayPort icon, which indicates that the port supports an Alternate Mode, and a simple passive USB-C to DP cable (or a monitor that does a USB-C connection in DP mode) would work. SuperUser contributors Journeyman Geek and chx have the answer for us. What does the D-shaped icon next to a USB-C port mean? The Answer Also, my laptop has a separate power input for charging. What does it stand for and what does its functionality entail?Īt first, I thought it stood for power delivery, but I could not find any matching symbols related to the “standard” on Google. I have tried looking for it online, but I cannot seem to find it anywhere. There is a small D-shaped icon next to my USB-C port that looks like two “Ds” or a “P and D” (a smaller “P” placed inside a larger “D”). SuperUser reader BloodPhilia wants to know what the D-shaped icon next to a USB-C port means:
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