I cannot connect by console port to Cisco Catalyst 3750 using ethernet to USB.

[koutouzov]

Hello. I have one Cisco Catalyst 3750 switch, and two 2950 switches. I am trying to reset their settings using a console cable with a trendnet Ethernet to USB adapter. When I try loading hyperterm or putty on com3 there is no signal. I have the communication port setting on com3. I don't know what the old settings are, and they can be reset. I get connectivity lights when plugging the cable into the switch ports. What am I missing? 

[Richard Simmons]

Are you definitely using the correct COM Port number? On Windows7 Right Click My Computer > Manage Then select Device Manager and expanPorts (COM & LPT)d  in my case is shows Prolific USB-to-Serial Comm Port (COM5). 

Once you have the right COM Port number just use the default settings in Putty. You may find the COM Port is locked up which will require a reboot.