What is an l2 port

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TP-Link T2600G-52TS (TL-SG3452) Switch, Jetstream, GB, 48-Port, L2
Device type Switch - 48 connections - managed
Enclosure Type Rack Mountable 1U
Gigabit Ethernet subtype
Ports 48 x 10/100/1000 + 4 x Gigabit SFP
Performance Switching capacity: 104 Gbps ¦ Transmission performance: 77 Mpps
Size of the MAC address table 16,000 entries
Jumbo frame support 9216 bytes
Routing Protocol IGMP
Remote management protocol SNMP 1, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, SNMP 2c, HTTPS, SSH, SSH-2, CLI
Encryption algorithm TLS 1.0, SSL 3.0, SSL 2.0
Authentication method Secure Shell (SSH), RADIUS
Features flow control, Layer 2 switching, DHCP support, ARP support, VLAN support, IGMP snooping, protection against DoS attacks, port mirroring, half duplex mode, full duplex mode, sFlow, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP) support, Multiple Spanning Tree Protocol (MSTP) support, DHCP snooping, Access Control List (ACL) support, Quality of Service (QoS), RADIUS support, SSH support, fanless , LACP support, Link Aggregation Control Protocol (LACP), IP-MAC integration
Product certifications IEEE 802.3u, IEEE 802.3i, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1 s
Status indicator power supply, system, link / activity

Expansion / connectivity
Interfaces 48 x 1000Base-T RJ-45 ¦ 4 x 1000Base-X SFP ¦ 1 x console RJ-45 management ¦ 1 x micro USB output management
Power supply
Power supply unit Internal power supply unit
Required mains voltage AC 120/230 V (50/60 Hz)
Power consumption in operation 33.52 watts

Accessories included 4 rubber feet
Rack mounting kit included
FCC product certifications
Software / system requirements
Software included drivers & utilities

measurements and weight
Width 44 cm
Depth 22 cm
Height 4.4 cm
Weight 4.5 kg