Connect Tech NVIDIA® Jetson™ TX2/TX1 carrier boards do not have connectors for the WIFI antenna. The WIFI antenna connection can be found on the side of the Jetson TX2/TX1 module. The connector used is a U.FL mini RF connector.
NVIDIA recommends: Pulse Electronics W1043 – Wireless External Dual Band Antenna for 2.4GHz & 5.0GHz Applications
Originally from kdb357: Location of WiFi Connection on NVIDIA® Jetson™ TX2 and Jetson™ TX1 Modules