Asus ROG STRIX X299-XE GAMING User Guide - Page 32
USB 3.1 Gen 2 front panel connector U31G2_E3, USB 3.1 Gen 1 connectors 20-1 pin U31G1_12, U31G1_34
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4. USB 3.1 Gen 2 front panel connector (U31G2_E3) This connector allows you to connect a USB 3.1 Gen 2 module for additional USB 3.1 Gen 2 ports. The latest USB 3.1 Gen 2 connectivity provides data transfer speeds of up to 10 Gbps. Chapter 1 5. USB 3.1 Gen 1 connectors (20-1 pin U31G1_12, U31G1_34) These connectors allow you to connect a USB 3.1 Gen 1 module for additional USB 3.1 Gen 1 front or rear panel ports. With an installed USB 3.1 Gen 1 module, you can enjoy all the benefits of USB 3.1 Gen 1 including faster data transfer speeds of up to 5Gb/s, faster charging time for USB-chargeable devices, optimized power efficiency, and backward compatibility with USB 2.0. The USB 3.1 Gen 1 module is purchased separately. The plugged USB 3.1 Gen 1 device may run on xHCI or EHCI mode depending on the operating system's setting. 1-16 Chapter 1: Product Introduction