TRENDnet TEG-S081FMI - Manual (Page 58)

Priority Queue Service settings:
First Come First Service: The sequence of packets sent is depend on arrive
order.
All High before Low: The high priority packets sent before low priority
packets.
Weighted Round Robin: Select the preference given to packets in the
switch's high-priority queue.
These options represent the number of high priority packets sent before one
low priority packet is sent. For example, 2 High :1 Low means that the switch
sends 2 high priority packets before sending 1 low priority packet.
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