@akh-1 

Hi, The support of Monitor mode and Packet injection depends on whether the device supports Linux systems, and if the device supports Linux systems, it generally does support both of these features. Please refer to https://www.tp-link.com/support/faq/1076/ to view the Linux-supported adapters and their compatible Linux kernel versions.

So TL-WN725n_V3 does support Monitor mode and packet injection.

However, If your current kernel is more updated than the supported versions, since Linux is developed at an open system with various branches, we are no longer able to provide the corresponding official drivers. In this way, you may search for third-party websites like GitHub.com for compatible drivers based on the chipsets used by the wireless adapter.

(For TL-WN725N_V3, it is RTL8188EUS)

Thank you very much and best regards.