Pin Name Description Level1 USB_H1_VBUS Power supply +5 V DC max 500mA2 USB_H1_DN Data minus (D-)3 USB_H1_DP Data plus (D+)4 GND GroundHeader: USB Type APin Name Description Level1 USB_OTG_VBUS Power supply +5 V DC max 500mA2 USB_OTG_DN Data minus (D-)3 USB_OTG_DP Data plus (D+)4 USB_OTG_ID Device ID5 GND GroundHeader: Micro-USB Type ABPin Name Description Level1 DAT32 CMD Pullup 3.3 V3 GND4 VDD 3.3 V5 CLK6 GND7 DAT08 DAT19 DAT22 211PRODUCT MANUALSANTARO core6.8 USB Host (X34)6.9 USB OTG (X20)6.10 SD Card Reader (X31)