The Yealink RCH40 E2 (1303166) is a four-port PoE+ switch for meeting-room audio and video systems. It brings network connectivity and PoE support together in a compact room cable hub.
Its four 10/100/1000 Mbps ports support Gigabit Ethernet. The RCH40 supports 802.3af PoE, with a listed 90 W total PoE budget and 30 W per port. Yealink EasyConnect lets the hub connect to a Yealink VCH port without a power adapter.
The E2 listing also notes QoS support and specifies that Yealink CM20 and CS10, as well as Dante devices, require the RCH40 E2 version because EEE is disabled.