i.MX 6ULL Applications Processors contains two high speed (HS) USB 2.0 OTG (Up to 480 Mbps) controllers, with two integrated HS USB Phy. On the EVK board, J1101 is a Type-A connector for USB host port, J1102 is a Micro-B connector for USB OTG port. The OTG port J1102 is also used for downloading the boot image by UUU Tool in Serial Download Mode.