Asus PRIME X399-A [53/96] Motherboard rear and audio connections

ASUS PRIME X399-A

2-13

Chapter 2

2.3 Motherboard rear and audio connections

2.3.1 Rear I/O connection

1 3 54

6 987

Rear panel connectors

1. USB BIOS Flashback button 6. USB 3.1 Gen 1 ports 3, 4

2. USB 3.1 Gen 1 ports 5, 6, 7, and 8. 7. USB 3.1 Gen 2 Type-C™ port EC1

3. LAN (RJ-45) port* 8. Optical S/PDIF Out port

4. USB 3.1 Gen 1 ports 1, 2 (bottom

port supports USB BIOS Flashback)

9. Audio jacks**

5. USB 3.1 Gen 2 Type-A port EA2

* and ** : Refer to the tables on the next page for LAN port LEDs and audio port denitions.

• USB 3.1 Gen 1 / Gen 2 devices can only be used as data storage only.

• We strongly recommend that you connect your devices to ports with matching data

transfer rate. Please connect your USB 3.1 Gen 1 devices to USB 3.1 Gen 1 ports and

your USB 3.1 Gen 2 devices to USB 3.1 Gen 2 ports for faster and better performance

for your devices.