D-Link DES-1228 user manual Understanding LED Indicators, Power and System LEDs, Power LEDs

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connector, and the male into a power outlet. Supported input voltages range from 100-240V AC, and 50-60Hz.

Understanding LED Indicators

The front panel LEDs provides instant status feedback and simplifies monitoring and troubleshooting tasks.

Figure 6 – LED indicators of the Switch

Power and System LEDs

Power LEDs

On

Off

When the Power LED light is on, the Switch is receiving power.

When the Power LED light is off, the power cord is not improperly connected.

CPU LEDs ( Management Indicator)

Blinking	When the CPU is working, the CPU LED is blinking.

Off	The CPU is idle.

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Contents DES-1228 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 Front panelChassis Dimensions Reset button on1000Mbps Copper Ports in the frontTemperature Storage Temperature Power consumptionEmission EMI and Safety Certifications AC inputInstallation 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 1~2410/100/1000 BASE-T Twisted Pair Ports Port 27~28 AC Power ConnectorRear Panel Power LEDs Understanding LED IndicatorsPower and System LEDs Ports 1 ~ 24 Status LEDs Link/Act 100Mbps1000Mbps Ports 27~28 10/100/1000 Base-T LEDs Link/ActWhen the 1000Mbps LED light is on, the respective port 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 Igmp SnoopingConfiguration Igmp Snooping Configuration Page Page Configuration Igmp Router port Settings Configuration 802.1D Spanning Tree Configuration Spanning TreePage Configuration Port Mirroring Configuration Port MirroringQoS 802.1p Default Priority QoS 802.1p Default PrioritySecurity Broadcast Storm Control Security Safeguard EngineSecurity 802.1X Setting Security 802.1X Setting Page Security Mac Address Table Static Mac Security Static Mac AddressSecurity Mac Address Table Dynamic Forwarding Table Security Dynamic Forwarding TableMonitoring Statistics Monitoring StatisticsMonitoring Port Statistics