3Com DUA1770-0AAA04 Same unless otherwise stated, Physical Dimensions, Environmental Requirements

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C	TECHNICAL SPECIFICATIONS

	The technical specifications for the Switches in the Switch 4900 Series are
	the same unless otherwise stated.

Physical Dimensions	Switch 4900: Switch Height: 65.8 mm (2.59 in.) x Width: 440 mm (17.3 in.) x
	Depth: 363.4 mm (14.30 in.) (not including bulge). Weight: 6.3 Kg (13.88 lbs)
	Switch 4900 SX: Height: 65.8 mm (2.59 in.) x Width: 440 mm (17.3 in.) x
	Depth: 363.4 mm (14.30 in.) (not including bulge). Weight: 6.0 Kg (13.22 lbs)
	Switch 4924: Height: 65.8 mm (2.59 in.) x Width: 440 mm (17.3 in.) x Depth:
	413 mm (16.27 in.) (not including bulge). Weight: 6.4 Kg (14.10 lbs)
	Switch 4950: Height: 65.8 mm (2.59 in.) x Width: 440 mm (17.3 in.) x Depth:
	413 mm (16.27 in.) (not including bulge). Weight: 6.91 Kg (15.23 lbs)

Environmental Requirements
Operating Temperature	0 ° to 40 °C (32 ° to 104 °F)
Storage Temperature	–10 ° to +70 °C (14 ° to 158 °F)
Operating Humidity	10–95% relative humidity, non-condensing
Standards	EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
	Operational testing: paras 2.1, 2.2, 2.30 and 2.13).

Safety
Agency Certifications	UL 1950 / UL60950, EN60950, CSA 22.2 No. 950 / CSA 22.2 No. 60950,
	IEC 60950, IEC 825-1 (4900 SX and 4950 only), EN 60825-1 (4900 SX and 4950
	only)

EMC
Emissions	CISPRR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
	ICES-003 Class A, VCCI Class A, AS/NZS 3548 Class A, CNS 13438 Class A,
	EN61000-3-2
Immunity	EN 55024

Power Consumption	Switch 4900: 308 watts maximum
	Switch 4900 SX: 162 watts maximum

Switch 4924: 254 watts maximum

Switch 4950: 200 watts maximum

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Contents SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Setting UP for Management PIN-OUTS Page About this Guide Icon Description ConventionsConvention Description Documentation RelatedDocumentation documentation SuperStack 3 Switch 4900 Series Getting Started Guide Please include the following information when commenting3Com recommends that you copy the Docs/referenceguide Directory as a whole to maintain the structure of the filesIntroducing Introducing the Superstack 3 Switch 4900 Series Hardware Features Switches Switch 4900 front view Switch Front View DetailSwitch 4924 front view Ports cross-over Color Indicates Port Status LEDs Power/Self Test LEDModule Status LEDs Unit LEDsSwitch 4900 rear view Switch RearSwitch 4924 rear view Power SocketSupported by your Switch Default SettingsSwitch units, it is returned to these defaults Installing the Switch Choosing a Suitable Package ContentsSite Rack-mounting Flow through the side panels of the SwitchDesk, or attach it to a wall Have been fittedFitting a bracket for rack-mounting Repeat steps 2 and 3 for the other side of the SwitchInterconnecting two Switch 4900 units Powering-up Power-upSwitch SequencePower System output That contain alignment pins can cause damage to your Switch RJ-45 connector is now a grounded portYour Switch OptionsOperation Switch 4950 GbicApproved Gbic TransceiversInserting a Gbic Transceiver into a Switch Fiber SC connector Type 4 Gbic with internal Eeprom fittedSwitch 4950 Gbic Operation Installing the Switch Setting UP for Management Overview Setting UpAutomatic IP Configuration Manual IP ConfigurationSetting UP for Management Pre-requisites Manually Configuring IP InformationConfiguring the Workstation with IP Information Connecting the Workstation to the SwitchSetting Up the Switch with IP Information Using Command Line Interface via Telnet Example top-level command line interface menu 19,200 baud Data bits Connecting a workstation to the Switch via the console portSetting Up the Switch with IP Information Viewing Configured IPAutomatically Pre-requisites Viewing IP Information via the Console Port Example top-level command line interface menu Refer to Setting Up Command Line Interface Management on Network Using Telnet Command LineInterface Management CLI Management viaInterface Setting Up WebChoosing a Browser Http//xxx.xxx.xxx.xxx Over the NetworkDefault Users Setting Up SnmpPasswords Security Device User Modify operation on the web interface User Default Name Password Access LevelFor Technical Support information, see Appendix D Problem SolvingSolutions below Solving ProblemsPower LED does not light On powering-up, the Power/Self Test LED lights yellowSolving Hardware ProblemsFan failure warning message is received For further information about RMON, refer to StatusUnit fails, no Snmp fan failure message is received Error message indicating that the Gbic transceiver is faultyIP Addressing Solving Communication ProblemsHow do you obtain a registered IP Address? Safety Information This must be approved for the country where it is used Important Safety InformationImportant Safety Information 3CGBIC91 Gbic SX 3CGBIC92 Gbic LX Schko ’information de Sécurité ImportanteAppendix a Safety Information 3CGBIC91 Gbic SX 3CGBIC92 Gbic LX Der Netzstecker muß die Norm CEE 7/7 erfüllen Schuko Wichtige SicherheitsinformationenWichtige Sicherheitsinformationen Appendix a Safety Information Null Modem Cable 9-pin to RS-232 25-pin PC-AT Serial CablePin to 9-pin Modem Cable ConnectorsRJ-45 Pin AssignmentsPin Number 10/100BASE-T 1000BASE-T Appendix B PIN-OUTS Safety Physical DimensionsPower Consumption Same unless otherwise statedProtocols Used for Administration Power SupplyHeat Dissipation Standards SupportedOnline Technical ServicesUsername anonymous From this region, email Asia, Pacific RimEurope, Middle East and Africa From this region, enter the URLEurope, Middle East and Africa Asia, Pacific RimCountry Telephone Number Asia, Pacific Rim Country Telephone Number Latin America Numbers IndexPasswords Regulatory Notices