LevelOne GSW-4870TGX - Manual (Page 13)

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Up to 4K unicast addresses entities per device, self-learning, and
table aging
1536KBytes packet buffer
Supports IEEE 802.3x flow control for full-duplex mode ports
Supports Back-pressure flow control for half-duplex mode ports
Supports port-base VLAN
Supports port-base QoS
Supports Trunking
Supports Port-setting for Speed/Disable, Flow control
Easy configuration via WEB Browser
Easy setting via Web Management Utility
Standard 19” Rack-mount size