DPA-400 with the AUX Channel Monitor GUI provides a compact, pocket sized tool for recording and analyzing DisplayPort AUX channel traffic. They enable the user to monitor, capture and document the DPCD reads and writes and the MST Sidebａnd Channel Communication over a DP link. Compatible with all DP versions from DP 1.1 to 1.4 and HDCP 1.3 and 2.2 messaging. DPA-400 is also compatible with DisplayPort Alternate Mode in USB Type-C interface.