AVB4212UX-10000S
AVB LICENSE FOR M4250-10G2XF-POE++
Designed specifically for the Netgear AV Line M4250-40G8F-PoE+ this AVB License enables the network switch's built-in Audio Video Bridging (AVB) profile to connect to compatible equipment.
https://kb.netgear.com/000062306/How-do-I-apply-my-M4250-AVB-license-in-the-AV-UI