The Cisco Catalyst 1912-DF Switch is now obsolete (past End-of-Life and End-of-Support status).
End-of-Sale Date: 1998-01-31
End-of-Support Date: 2003-02-01
Cisco's End-of-Life Policy
You can view a listing of available Campus LAN Switches - Access offerings that best meet your specific needs
If you want support information for the Cisco Catalyst 1912-DF Switch documentation, it may be available through Cisco.com Search or in the Cisco Community