Cisco CBS220-48T-4G Managed L2 Gigabit Ethernet (10/100/1000) 1U White
28-Port Gigabit Ethernet L2 Switch, 28 X 1GB SFP, with 4 X SFP Uplinks and 4 X 1g RJ45/SFP Combo Ports, Stackable Switch - China Gigabit Ethernet Switch and Industrial Ethernet Switch
What is a Layer2 Switch and how is it different from other network devices like Repeaters, Bridges and Routers? – Computer Networking Demystified
L2 and L3 Topology - Oracle Ethernet Switches
H3C S5130S-16S-PWR-EI L2 Ethernet Switch with 12*10/100/1000Base-T PoE+ Ports,2*10/100/1000Base-T Ports and 2*1G/10GBase-X SFP Plus Ports,(AC)