Asus ESC2000 G2 - Manual (Page 70)

Chapter 3: Motherboard information 3-22
7. USB connectors (10-1 pin USB78, USB910; A-Type USB12/11)
These connectors are for USB 2.0 ports. Connect the USB module cables to
connectors USB78 and USB910, then install the modules to a slot opening at the back
of the system chassis. These USB connectors comply with USB 2.0 specification that
supports up to 480 Mbps connection speed.
8. USB connectors (USB3_34)
This connector is for USB 3.0 ports. Connect the USB module cable to connector
USB3_34.