can open putty serial with prolific usb to serial comm port

Disable COM3 & COM4 drivers in Device Manager. I think it's got to be a faulty converter,will send it back for another one and hope that does the trck.

Plugin your cable to another built-in USB port with the other end to our device serial port. The second step is to install the driver. On your device, make sure that the serial port is open or bypass the firewall in that end. UseUSB to serial converterConnect to windows. USB to serial converterIt looks like this: Then open the windows. Have you tried downloading the latest driver for the converter from the manufacturer web site? what make/model is it and what is the manufacturer website? surely they have some kind of support page that should help you with this? One of the issues I've heard of with these usb to serial converters using with Cisco products is the converter does not support the cisco break sequence for getting into rommon mode, but not heard of general input issues before. I've seen teraterm and putty mentioned here but have you tried good old hyperterminal? Also try lowering the baud rate from 9600 to something lower or even try them all up to 9600. I had something similar on a Nortel baystack L2 switch a while back using a female - female DB9 serial console and it turned out to be a faulty console cable but doubt it's just faulty if you just bought it, more likely to be linked to capabilities of the converter terminal software. Printing A Windows Test Page Using Windows 10 Open 'Devices and Printers' right-click your printer click 'Printer Properties'. In this scenario I got to the login screen and tried to press ctrl Y to login to the switch and no response from terminal. Be sure to select 'Printer Properties' and not 'Properties', or you will not see a Print Test Page button. I'd say try hyperterminal and baud rate adjustment, if that fails then I would say this is your best bet or something similar that states it supports Cisco console functionality and break sequence Under the General tab, click Print Test Page.

Can open putty serial with prolific usb to serial comm port