
25  | 
  | 
  | 
  | |
Placing Units On Top of Each Other  | 27  | |||
Stacking Units  | 27  | 
  | 
  | 
  | 
Stacking Two Units  | 27  | 
  | 
  | |
Stacking Multiple Units  | 28  | 
  | ||
The   | 30  | 
  | ||
Connecting a Redundant Power System 30  | ||||
30  | ||||
Checking for Correct Operation  | 30  | |||
Choosing the Correct Cables  | 31  | 
  | ||
Solving Problems Indicated by LEDs  | 32  | |||
Managing the Switch  | 33  | 
  | 
  | |
ASAFETY INFORMATION
  | Important Safety Information 36  | 
  | |
  | L’information de Sécurité Importante  | 38  | |
  | Wichtige Sicherheitsinformationen  | 40  | |
  | 
  | 
  | 
  | 
B  | 
  | 
  | |
  | Null Modem Cable  | 41  | 
  | 
  | 41  | 
  | |
  | Modem Cable 42  | 
  | 
  | 
  | RJ45 Pin Assignments  | 42  | 
  | 
CTECHNICAL SPECIFICATIONS
DTECHNICAL SUPPORT
Online Technical Services  | 45  | 
  | 
  | |
World Wide Web Site  | 45  | 
  | 
  | |
3Com FTP Site  | 45  | 
  | 
  | 
  | 
3Com Bulletin Board Service  | 46  | 
  | ||
3ComFacts Automated Fax Service  | 47  | |||
Support from Your Network Supplier  | 47  | |||
Support from 3Com  | 47  | 
  | 
  | 
  | 
Returning Products for Repair  | 49  | 
  | ||
iv