M4250-40G8XF-PoE+ - AV Line 40x1G PoE+ 960W and 8xSFP+ Managed Switch. NETGEAR M4250 AV switches are designed specifically for audio/video professionals and are pre-configured for standard audio and video signals. When requirements are more specific, an AV user interface provides customization with port-based profiles. For audio, Dante, Q-SYS, and AES67 profiles are available, as well as an AVB profile that requires an AVB license, sold separately. For video, the M4250s offer profiles for NVX, Kramer, Q-SYS, NDI, WyreStorm, Dante, etc., as well as mixed profiles for audio/video/control. If multiple switches are used, the M4250, M4300, or M4500 series switches can be easily interconnected via NETGEAR IGMP PlusTM.