Asus MAXIMUS IX FORMULA Manual page 38

2. USB 3.1 front panel connector (USB3.1_E1)
This connector allows you to connect a USB 3.1 module for additional USB 3.1 ports.
The latest USB 3.1 connectivity provides data transfer speeds of up to 10 Gbps. The
next-generation standard is completely backward-compatible with your existing USB
devices.
3. USB 3.0 connector (20-1 pin USB3_12)
This connector allows you to connect a USB 3.0 module for additional USB 3.0 front
or rear panel ports. With an installed USB 3.0 module, you can enjoy all the benefits of
USB 3.0 including faster data transfer speeds of up to 5 Gbps, faster charging time for
USB-chargeable devices, optimized power efficiency, and backward compatibility with
USB 2.0.
The USB 3.0 module is purchased separately.
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Chapter 1: Product Introduction