D-Link DES-1252 1000Mbps Copper, Ports in the front, Panel, Chassis Dimensions, Reset button on

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1.DEM-330T (TX-1550/RX-1310nm), up to 10km, Single-Mode

2.DEM-330R (TX-1310/RX-1550nm), up to 10km, Single-Mode

3.DEM-331T (TX-1550/RX-1310nm), up to 40km, Single-Mode

4.DEM-331R (TX-1310/RX-1550nm), up to 40km, Single-Mode

21000Base-T ports

	1000Mbps Copper	1000Base-T ports compliant to following
	1000Mbps Copper	standards:
	ports in the front	standards:
	ports in the front	1.	IEEE 802.3 compliance
	panel	1.	IEEE 802.3 compliance
	panel	2.	IEEE 802.3u compliance
		2.	IEEE 802.3u compliance
		3.	IEEE 802.3ab compliance
		4. Support Full-Duplex operations

	Chassis

	Dimensions	19-inch, 1U Rack-mount size
	Dimensions	440mm x 310mm x 44mm
		440mm x 310mm x 44mm

	Reset button on the	A factory reset button x 1
	front panel	A factory reset button x 1
	front panel

	Physical & Environment

	AC input	100~240 VAC, 50/60Hz
		Internal universal power supply

	Operation	0~40°C
	Temperature	0~40°C
	Temperature

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Contents DES-1252 Table of Contents Page Iii Page Purpose Terms/UsageGigabit Ethernet Technology IntroductionSwitching Technology Fast Ethernet TechnologyFeatures IEEE802.1X Port-based Access ControlTechnical Specifications Key Components / Performance Switching CapacityForwarding Mode Max. Forwarding RateSdram for CPU Flash MemoryPort Functions Combo portsChassis Dimensions Reset button onTemperature 1000Mbps CopperStorage Temperature Power consumptionEmission EMI and Safety Certifications HumidityInstallation UnpackingRack Mounting Attach the adhesive rubber pads to the bottomConnecting Network Cable Attach the mounting brackets to the SwitchAC Power Reset button LED IndicatorFront Panel 10/100 BASE-TX Twisted Pair Ports Port 1~48AC Power Connector Rear Panel10/100/1000 BASE-T Twisted Pair Ports Port 51~52 Understanding LED Indicators Power and System LEDsPower LEDs Ports 1 ~ 48 Status LEDs Link/Act Link/Act for UTP ports Ports 51~52 10/100/1000 Base-T LEDs Link/Act10/100Mbps shown in Amber Light Page Installing the SmartConsole Utility Supported web browsersSmartConsole Utility Features Menu ToolbarOption includes Refresh Time and Group Interval functions Definitions of the Discovery List features Discovery ListMonitor List Definitions of the Monitor List functions and termsView trap Device Setting This space has been intentionally reserved for notesFirmware Upgrade Login Web-based ManagementLog in screen Tool Menu Tool MenuSetup Menu Tool Menu Firmware Backup and UploadSystem System Setting C PSystem Trap Setting System System SettingSystem Port Setting System Trap SettingSystem Port Setting System Snmp Setting System Snmp Setting System Password Access Control Configuration 802.1Q VlanConfiguration 802.1Q Vlan Default Setting Configuration 802.1Q Vlan Add VID Configuration Trunking Configuration 802.1Q Vlan VID AssignmentsConfiguration Igmp Snooping Configuration Igmp Snooping ConfigurationPage Page Configuration 802.1D Spanning Tree Configuration Igmp Router port SettingsConfiguration Spanning Tree Page Configuration Port Mirroring Configuration Port MirroringQoS 802.1p Default Priority Security Safeguard EngineSecurity 802.1X Setting Security Broadcast Storm ControlSecurity 802.1X Setting Page Security Mac Address Table Static Mac Security Static Mac AddressSecurity Mac Address Table Dynamic Forwarding Table Monitoring StatisticsMonitoring Statistics Monitoring Port Statistics