Intel 220T, 210T manual Troubleshooting, No link left LED is off, Intermittent loss of link

Contents Intel Express 220T and 210T Stackable Hubs User Guide694466-001 First EditionYear 2000 Capable Contents Connector Features220T and 210T Overview PowerCommon Features and Optional Modules Feature ComparisonSupports Redundant Power Supply RPS Supports Redundant Power Supply RPSPartitioned ports Understanding 220T Hubs220T Port LEDs StatusStackable Hub 220T Hub LEDsIntel Express 220T PowerUnderstanding 210T Hubs 210T Port LEDsStatus 210T Hub LEDsIntel Express 210T MeaningGeneral Connecting to DevicesConnection Guidelines CablingStacking Hubs Why Stack?Guidelines Guidelines for bridging a stack of 220T hubs Bridging SegmentsBridging 220T Hubs Example 1 220T hubs stacked with 210T hubsBridging 210T Hubs Example 2 Bridging with a 10/100 switchExample 3 Bridging with an Ethernet Module Straight-through vs. crossover cables Cabling DevicesMedia Requirements 100Base-TX4 Not used Straight-through UTP cableCrossover UTP cable 5 Not usedFrequently Asked Questions Can I set the speed on individual ports?Can I daisy-chain a 100Mbps hub to the 220T hub with UTP cabling? Why would I stack hubs operating at 10Mbps to hubs at 100Mbps?Can I daisy-chain 210T hubs together with UTP cabling? Federal Communications Commission FCC Statement AVERTISSEMENTRegulatory Information and Warnings Manufacturer DeclarationAVVERTENZA WARNUNGADVERTENCIAS Returning a Defective Product RMA Hardware WarrantyLimited Hardware Warranty LIMITATION OF LIABILITY AND REMEDIESNumber Limited Hardware Warranty Europe onlyCountry LanguageNo link, yellow right LED above port is blinking slowly TroubleshootingNo link left LED is off Link, but yellow right LED above port is blinking erraticallyCustomer Support Technicians Intel Customer SupportAutomated Support How to Access WWW694466-001