EVGA Classified SR-X User Guide - Page 20

EVGA Classified SR-X Motherboard USB Headers This motherboard contains four (4) USB 2.0 ports that are exposed on the back panel of the chassis. It also supports four (4) USB 3.0 ports on the back panel which can operate at USB 2.0 or USB 3.0 specifications. The motherboard also contains three 10-pin onboard header connections that can be used to connect an optional external bracket containing six (6) USB 2.0 ports. It also contains one 19-pin onboard header that can be used to connect an optional external bracket containing (2) USB 3.0 ports that are backwards compatible with USB 2.0. 1. Secure the bracket to either the front or rear panel of your chassis. 2. Connect the end of the USB cable to the USB 2.0/3.0 headers on the motherboard. Table 3. USB 2.0 Header Pins Connector USB 2.0 Header Connector Pin Signal 1 5V_DUAL 3 D- 5 D+ 7 GND 9 Empty Pin Signal 2 5V_DUAL 4 D- 6 D+ 8 GND 10 No Connect 20