3Com 3C16980, 3C16981 A, B, C, D

iv
Placing Units On Top of Each Other 25
Stacking Units 26
Stacking Two Units 26
Stacking Up To Four Units 27
The Power-up Sequence 29
Connecting a Redundant Power System 29
Powering-up the Switch 3300 29
Checking for Correct Operation 29
Choosing the Correct Cables 30
Solving Problems Indicated by LEDs 31
Managing the Switch 32
ASAFETY INFORMATION
Important Safety Information 34
L’information de Sécurité Importante 36
Wichtige Sicherheitsinformationen 38
BPIN-OUTS
Null Modem Cable 39
PC-AT Serial Cable 39
Modem Cable 40
RJ45 Pin Assignments 40
CT
ECHNICAL SPECIFICATIONS
DT
ECHNICAL SUPPORT
Online Technical Services 45
World Wide Web Site 45
3Com Knowledgebase Web Services 45
3Com FTP Site 46
3Com Bulletin Board Service 46
3Com Facts Automated Fax Service 47
Support from Your Network Supplier 47
Support from 3Com 47
Returning Products for Repair 49
16980ua.bk Page iv Friday, April 30, 1999 9:03 AM