Rackmount switch poe switch switching ports 48 gigabit ethernet ports 48 x rj 45 fast ethernet ports 48 x rj 45 ethernet ports 48 x rj 45 switch type stackable management managed layer 2 network standards quality of services qos vlan port mirroring sflow jumbo frames power over ethernet poe backplane bandwidth 176 gbs packet forwarding rate 7142 interface 1x serial db 9 mac address 16 k buffer 2 048 kbit uplink port 4 x sfp link protocol