USB接口（USB3-4,OTG）
From ESS-WIKI
USB Type A Connector (USB34)
RSB-4680 supports one standard USB2.0 Type A connector on the coastline.
| Pin | Description |
| 1 | +5V_USB34 |
| 2 | USB3_D- |
| 3 | USB3_D+ |
| 4 | GND |
| 5 | +5V_USB34 |
| 6 | USB4_D- |
| 7 | USB4_D+ |
| 8 | GND |
USB (Internal Pin Header) (CN20)
RSB-4680 provides extra internal 3 x USB 2.0 pin header.
| Pin | Description |
| 1 | +5V_USB12 |
| 2 | +5V_USB12 |
| 3 | USB1_D- |
| 4 | USB2_D- |
| 5 | USB1_D+ |
| 6 | USB2_D+ |
| 7 | GND |
| 8 | GND |
| 9 | USB5_D- |
| 10 | +5V_USB5 |
| 11 | USB5_D+ |
| 12 | NC |
| 13 | GND |
| 14 | GND_Shielding |
| 15 | GND_Shielding |
Micro USB Connector (OTG)
RSB-4680 supports one USB OTG port on the coastline.
| Pin | Description |
| 1 | OTG5V |
| 2 | USB_OTG_D- |
| 3 | USB_OTG_D+ |
| 4 | ID |
| 5 | GND |
