D-Link DES-1210-52 52-Port Layer 2 Smart Managed Fast Ethernet Switch
• 48 Port 10/100 Base-T POE Switch with 2 x 10/100/1000 Base-T Ports
• Support 2 x 10/100/1000 Base-T/SFP Combo Slots
• IEEE 802.1Q Virtual LAN (VLAN)
• Support  IGMP and MLD Snooping
• Support Auto Surveillance and Auto Voice VLAN
• Broadcast, Unicast and Multicast Storm Control
• Support Smart IP-MAC-Port Binding
• Support IEEE 802.1p QOS and COS
• 802.1x port-base Authentication through RADIUS servers
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Size: 7.5” Metal Case / 19” Metal Case
Interface: 8 10/100BASE-TX PoE
24 10/100BASE-TX
2 1000BASE-T
2 Combo 10/100/1000BASE-T / 100/1000SFP
24 10/100BASE-TX PoE
2 1000BASE-T
2 Combo 10/100/1000BASE-T / 100/1000SFP
48 10/100BASE-TX
2 1000BASE-T
2 Combo 10/100/1000BASE-T / 100/1000SFP
Port Standards: IEEE 802.3 10BASE-T Ethernet (twisted-pair copper)
IEEE 802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)
Auto-negotiation
IEEE 802.3x Flow Control
IEEE 802.3 10BASE-T Ethernet (twisted-pair copper)
IEEE 802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)
IEEE 802.3ab 1000BASE-T Gigabit Ethernet (twisted- pair copper)
IEEE 802.3z Gigabit Ethernet (fiber) ANSI/IEEE 802.3
Auto-negotiation
IEEE 802.3x Flow Control
Switching Capacity: 1.6 Gbps
12.8 Gbps
17.6 Gbps
64-Byte Packet Forwarding Rate : 1.19 Mpps
9.5 Mpps
13.1 Mpps
MAC Address Table Size: 8K Entries
Packet Buffer Memory: 384 KB
512 KB
1 MB
Flash Memory 16 MB
Forwarding Method Store-and-forward
PoE Standard : 802.3af
802.3af and 802.3at 
PoE Capable Ports: Port 1-8 up to 15.4 watts per port
Port 1-4 up to 15.4 or 30 watts per port
Port 5-24 up to 15.4 watts per port
PoE Power Budget: 72 watts
193 watts