AI has become an essential component of automated vehicle technologies. With built-in cost-effective performance/watt-cost NVIDIA^® Jetson Orin™ Nano SOM, ATC 3520 can deliver up to 40(sparse)INT8 TOPS for running modern AI workloads while consuming 15W low power. This is suitable for AI power IoT gateway, OHV AI Edge recognition, AI traffic sign control, and factory automation/machine vision, to enhance the productivity and lowering TCO. ATC 3520 is a fanless, compact, and IP67 certified computer. It features 9~36VDC with IGN control, 4 PoE+ for IP CAM deployment to 4Kp30/1080p60. Moreover, ATC 3520 is designed with diverse peripheral ports, like USB 3.2, isolation CANBus, RS232, Console, DI/DO, OTG, and HDMI for connecting to a wide range of devices/sensors. With the 5G NR, Wi-Fi 5/6 modules installed, ATC 3520 can enhance AI inference through Cloud Service Provider (CSP). As for harsh environment applications, ATC 3520 can operate at a wide range temperature of -30~70°C and meet the MIL-STD-810G military standard for vibration and shock resistance. In terms of regulation, ATC 3520 is compliant with CE/FCC Class A, UKCA and Emark (E13)/EN50155.