USB 3.1 Type E is not a USB standard yet (at least according to the USB standards site) but is a new standard for motherboards that allows many different types of USB ports to go out of a PC case, It allows superspeed PCI signals to run through USB-C cables or many other types of connections from the motherboard to the case. It also allows up to 100 watts of power to be sent down the (short) cable. I believe that power is controlled via the USB-PD standard. PCI-E connectors that are usually only on motherboards can be converted to USB-E connectors fairly easily. It is a motherboard interface that supports the USB3.1 Gen2 protocol. Similar to SATA, it is welded on the motherboard and is not directly exposed to the user. It needs to be converted to other types of USB interfaces (such as TYPE-C ) to work, the actual USB version used to transfer data depends on the version supported by the adapter.
USB TYPE E interface Supported MotherBoards
■ ASUS ROG Crosshair VIII Formula
■ ASUS ROG Maximus XIII Extreme Glacial
■ MSI MEG Z490 Godlike
■ MSI MEG Z590 GODLIKE
■ Gigabyte X570 AORUS XTREME
■ Gigabyte Z590 AORUS XTREME WATERFORCE
■ ASRock X570 Aqua
■ ASRock X570 Taichi Razer Edition
flykantech.com USB Type-E Related Products
■ flykantech.com USB35-2A2C-10G 2A+2C Hub - https://www.flykantech.com/products/hub35-2a2c-10g
■ flykantech.com USB 3.2 Gen 2 Type-E Cable for MotherBoard - https://www.flykantech.com/products/usb32-ae-50