&lt;b&gt;Green Technology&lt;/b&gt;&lt;br /&gt;- IEEE 802.3az Energy Efficient Ethernet&lt;br /&gt;- D-Link Green 3.0 power-s!aving features&lt;br /&gt;- LED and Port Shutoff&lt;br /&gt;- Port Standby&lt;br /&gt;- System Hibernation&lt;br /&gt;- Cable Length Detection&lt;br /&gt;- Link Status Detection&lt;br /&gt;- Time-based PoE (PoE model only)&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Security Features&lt;/b&gt;&lt;br /&gt;- Access Control List&lt;br /&gt;- D-Link Safeguard Engine&lt;br /&gt;- Port Security&lt;br /&gt;- ARP Spoofing Prevention&lt;br /&gt;- Smart IP-MAC-Port Binding&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Intuitive Management&lt;/b&gt;&lt;br /&gt;- IPv4/ IPv6 Dual Stack1&lt;br /&gt;- Web GUI (supports 10 languages)&lt;br /&gt;- SmartConsole utility&lt;br /&gt;- SNMP and RMON&lt;br /&gt;- Simplified CLI through Telnet&lt;br /&gt;&lt;br /&gt;&lt;b&gt;QoS&lt;/b&gt;&lt;br /&gt;- Supports IEEE 802.1p QoS&lt;br /&gt;- Supports DSCP&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Advanced Features&lt;/b&gt;&lt;br /&gt;- Auto Surveillance VLAN&lt;br /&gt;- Auto Voice VLAN&lt;br /&gt;- Port or VLAN-based Loopback Detection&lt;br /&gt;- Cable Diagnostics&lt;br /&gt;- LLDP/LLDP-MED&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Trap &amp; Logs&lt;/b&gt;&lt;br /&gt;- SNMP Trap&lt;br /&gt;- Trap for SmartConsole Utility&lt;br /&gt;- System LogD-Link DGS-1210-20. Switch type: Managed Switch layer: L2. Basic switching RJ-45 Ethernet ports quantity: 20. Full duplex. MAC address table: 16000 entries Switching capacity: 40 Gbit/s. Networking standards: IEEE 802.3IEEE 802.3abIEEE 802.3uIEEE 802.3x. Rack mounting Form factor: 1U