Tenda 48 Port Gigabit Unmanaged Ethernet Switch, 2x independent Gigabit SFP slots

Complies with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z, and IEEE 802.3x standards
Provides 48 10/100/1000 Mbps Base-T Ethernet ports and support auto MDI/MDIX
Provides 2 independent 1000 Mbps SFP slots and support 20 km long-distance networking
Support 16 K MAC address table and MAC address auto-learning
Support full duplex IEEE 802.3x flow control and half duplex back pressure flow control
Support unblocked wire speed forwarding for all ports 
Support 12 Mb large buffer queue
Integrated professional lightning protection circuit offers 6 kV lightning protection for the built-in power supply and all Ethernet ports
One-key VLAN function helps isolate broadcast storms effectively
Feature a 19-inch/1U standard rack-mount shell design