9ContentsPreface 11Nortel Ethernet Routing Switch 4500 Series 11Related publications 12Finding the latest updates on the Nortel Web site 13How to get help 13Getting help from the Nortel Web site 13Getting help over the phone from a Nortel Solutions Center 14Getting help from a specialist by using an Express Routing Code 14Getting help through a Nortel distributor or reseller 14Installing the Nortel Ethernet Routing Switch 15Electrostatic discharge 16Preventing electrostatic discharge damage 16Preventing electrostatic damage in new cable installations 16Environmental requirements 17Package contents 18Installing the Nortel Ethernet Routing Switch 4500 Series on a table or shelf 19Installing the Nortel Ethernet Routing Switch 4500 Series in an equipment rack 21Cabling requirements for the Nortel Ethernet Routing Switch 4500 Series 23Installation and removal of SFP transceivers 23Installation of SFP transceivers 23Removal of SFP transceivers 24RJ-45 connector pin assignments 25Nortel Ethernet Routing Switch 4548GT 26Nortel Ethernet Routing Switch 4548GT-PWR 27Nortel Ethernet Routing Switch 4550-T 27Nortel Ethernet Routing Switch 4550T-PWR 28Console port pin assignments 28Universal Serial Bus (USB) ports 29Power specifications for the Nortel Ethernet Routing Switch 4500 Series 29Nortel Ethernet Routing Switch 4548GT, 4550T, and 4526FX 30Nortel Ethernet Routing Switch 4548GT-PWR and 4550T-PWR 30Nortel Ethernet Routing Switch Redundant Power Supply 15 powerspecification 31Nortel Ethernet Routing Switch 4500 SeriesInstallation GuideNN47205-300 02.01 Standard5.0 23 February 2007Copyright © 2007, Nortel Networks Nortel Networks Confidential.