
10/100/1000 Copper Aggregation Tap
USR4503 - Installation Guide
Installation Notes:
• BeforesettingtheUSR4503toaggregationmode,itisimportanttoconsiderthelinkutilizationonthenetworklinks.Ifthecombined
bidirectionaltrafficoverthenetworkportsexceedsthespeedofthemonitoringdevices,lossofthetrafficthroughthemonitoringports
willoccur.
• AllportsontheUSR4503aresetoAUTOspeednegotiation.Iftheseportsareconnectedtodeviceswithmanualspeedsettings,confirm
thatthedevicesontheeithersideofthetapareatthesamespeed.ForoptimalresultssetalldevicestoAUTOspeednegotiation.
• Itisrecommendedthattheendpointdevicesconnectedtoeachnetworkportarecapableofthesamemaximumspeed.Oversubscription
mayoccurifthespeedsaremismatched.Ifthedevicelosespowerandtheenddevicesaresettodifferentspeeds,lossoftrafficmayoccur.
• MDI-Xmayneedtobeturnedoffonsomsenetworkdevicesconnectedtothetapforpropercommunication.
• Powersuppliesshouldbeconnectedtooutletswithdifferentcircuitbreakerstomaintainmaximumuptime.
• Themaximumcablelengthbetweennetworkdevices(notincludingthetap)shouldbe90m
• RackmountUSR4500-RMKisavailableseparatelytomount3unitshorizontally.
Warranty and Support Information:
ThisproductissubjecttotheU.S.RoboticsCorporationLimitedWarranty.ToviewacopyoftheLimitedWarranty,pleasesee:
www.usr.com/support/4503
ForinformationonhowtocontactUSRoboticsTechnicalSupport,pleaseseetheUSRoboticscorporatewebsiteat:www.usr.com/support
Regulatory Information:
CE Compliance
Declaration of Conformity
Hereby,USRobotics,declaresthatthistap,USRobotics10/100/1000CopperTap,isincompliancewiththeessentialrequirements
andotherrelevantprovisionsofEMCDirective89/366/EECandLowVoltageDirective98/68/EEC.Anelectroniccopyoftheoriginal
CEDeclarationofConformityisavailableattheUSRoboticswebsite:www.usr.com
ThisproductissubjecttoDirective2012/19/EUoftheEuropeanParliamentandtheCounciloftheEuropeanUniononwasteelectri-
calandelectronicequipment(WEEE)and,injurisdictionsadoptingthatDirective,ismarkedasbeingputonthemarketafterAugust
13,2005,andshouldnotbedisposedofasunsortedmunicipalwaste.PleaseutilizeyourlocalWEEEcollectionfacilitiesinthedispo-
sitionofthisproductandotherwiseobserveallapplicablerequirements.Forfurtherinformationontherequirementsregardingthe
dispositionofthisproductandcollectionfacilitiesthatmaybeavailabletoyou,pleasevisit:www.usr.com/weee
ThisproductissubjecttoDirective2011/65/EUoftheEuropeanParliamentandtheCounciloftheEuropeanUniononrestric-
tionoftheuseofcertainhazardoussubstancesinelectricalandelectronicequipment(RoHS)and,injurisdictionsadopting
thatDirective.Forfurtherinformationregardingthisproduct,pleasevisit:www.usr.com/rohs
Equipment Rack Installation:
• Selectalocationandalignthe10/100/1000CopperAggregationTapthumbscrewwith
thecorrespondinguniversalflangemiddlehole.
WARNING:Installingonawideflangeholewillresultinthetapinvadinganadjoin-
ingstandard1Urackspace,unlessarackmoutkitisused.The19”1UUSR4500-RMK
RackmountInstallationKitisavailableforuptothreeunits.
• Tightenthethumbscrewuntilthetapissecureintherack.
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