3Com 3C16980, 3C16981 B

BPIN-OUTS

Null Modem Cable 9-pin t o RS-232 25-pin

PC-AT Serial Cable 9-pin to 9-pin

16980ua.bk Page 39 Friday, April 30, 1999 9:03 AM

Contents

Main 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 C A BOUT T HIS G 1 2 A B C ECHNICAL SPECIFICATIONS D Page Page A BOUT T HIS G Conventions Tab le 1 Notice Icons Tab le 2 Text Conventions Related Documentation Year 2000 Compliance Documentation Comments 1 About the SuperStack II Switch 3300 Switch 3300 Front View Detail Tab le 3 LED behavior Switch 3300 Rear View Detail Page Page Page Page Page Configuration Rules with Full Duplex Page 2 Choosing a Suitable Site Rack-mounting Placing Units On Top of Each Other Stacking Units Page Page The Power-up Sequence Choosing the Correct Cables Solving Problems Indicated by LEDs Tab le 5 Problems indicated by LEDs Managing the Switch A Important Safety Information Page Linformation de Scurit Importante Page Wichtige Sicherheitsinformat ionen B Modem Cable RJ45 Pin Assignments Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45 connectors Tab le 6 Pin assignments Page C ECHNICAL SPECIFICATIONS Page D ECHNICAL SUPPORT Online Technical Services Page Support from Your Network Supplier Support from 3Com 48 APPENDIX D: TECHNICAL SUPPORT When you contact 3Com for assista nce, have the following information ready: Here is a list of worldwide technical teleph one support numbers: Europe, South Africa, and MiddleEast From the following countries, you may use the toll-freenumbers: (1 800 638 3266) Enterprise Custo mers: 1 800 876-3266 Returning Products for Repair Page G Page Page Page Page Page I R S T U W 3Com Corporation LIMITED WARRANTY SUPERSTACK II SWITCH 3300 H S OBTAINING WARRANTY S L IMITATION OF L D G OVERNING L EMC S FCC S CSA S VCCI S BCIQ S