Yes, the TP-Link ER707-M2 supports WireGuard VPN from firmware version 1.2.1. You can use it to set up both site-to-site and client-to-site connections, either in standalone mode or via the Omada SDN Controller.

Requirements:
- Firmware version: At least 1.2.1 (currently 1.2.3 is available).
- Hardware version: V1.0 or higher.
- Management: Either in standalone mode or via the Omada Controller (from version 5.9).