Asmedia ASM4242 USB 4.x Controller Drivers Version 1.0.0.0000 WHQL. - The ASM4242 is ASMedia’s first generation of Universal Serial Bus 4 (USB4®) host controller. It features upstream ports with 4-lane PCI Express 4.0 (PCIe Gen 4) and dual 4-lane DisplayPort sink ports, and downstream facing ports with dual USB4 ports. The driver is designed to work with Windows 10 - (64) and Windows 11.