USB-D is a port for peripherals that uses standard USB cables.
The adapter has an USB-E connector and an HDMI connector, which is standard.
USB-X is a connector that’s usually used with USB hubs, though it’s usually just used for connecting peripherals.
The adapters that use USB-Y connectors are called USB-Z.
The USB-G connector is sometimes used with mice, keyboards, and other peripherals, but not always.
USB 2.0 is also sometimes used, but only for charging peripherals or to connect peripherals to devices that support it.
USB 3.0, the standard for devices that can use a USB cable, is only supported by a few peripherals and is only a USB port.
It’s a bit of a headache for some users, because it’s so different than what you see in the pictures.
However, it’s an option for most people who have a USB hub, so that’s why the USB 3 port adapter is available.
The problem with the USB 2 port adapter