Usb to serial no output Yosemite

[Yogi-HM]

I recently updated my MacbookPro to Yosemite and have found that my usb to serial cable no longer works. I've tried reinstalled drivers multiple times with no success when I connect my Gigaware usb to serial cable and conect my cisco console cable which used to work fine on Mavericks but now I get no output in my terminal program secureCRT.

I when my cable is connect I see the following in dev

hugh-millers-macbook-pro-77:dev Yogi$ ls tty.*
tty.Bluetooth-Incoming-Port tty.HughsiPhone-WirelessiAP
tty.Bluetooth-Modem tty.PL2303-00002006

hugh-millers-macbook-pro-77:dev Yogi$ ls *PL*
cu.PL2303-00002006 tty.PL2303-00002006
hugh-millers-macbook-pro-77:dev Yogi$

Here is what I see in System Information

USB-Serial Controller:

Product ID: 0x0fba
Vendor ID: 0x05ad (Y.C. Cable U.S.A., Inc)
Version: 3.00
Speed: Up to 12 Mb/sec
Manufacturer: Prolific Technology Inc.
Location ID: 0x04100000 / 4
Current Available (mA): 500
Current Required (mA): 100

SecureCRT is set to use /dev/cu.PL2303-00002006

Has anyone experienced this issue, can anyone assist?

Mac Info

MacBook Pro (15-inch, Late 2008)
2.53 GHz Intel Core 2 Duo
4 GB 1067 MHz DDR3

 

[snorkelman]

struggling to find any prolific USB serial adapters here (every single one I pull out seems to be FTDI doh!!)

if I find any tomorrow at work I'll throw Yosemite onto a box and try and have a look for you if no one else manages to come up with anything

 

[snorkelman]

drawn a blank on prolific adapters here Could have sworn we had some but everything is FTDI, hopefully someone else can chime in

 

[Yogi-HM]

drawn a blank on prolific adapters here Could have sworn we had some but everything is FTDI, hopefully someone else can chime in

Thanks, I'm beginning to think it's a hardware issue between my MacBook Pro and Yosemite. I just tried an RS232 serial adapter and I only get 1 line of output as I just connect to the device but then all communication stop. I also notice that Yosemite seems to be loading the drivers for the devices as I didn't install any drivers but noticed one came up as soon as I connected the RS232 usb to serial adapter.

 

[Yogi-HM]

Ok so I"ve gotten a bit further, after removing the osx-pl2303.kext files and doing a reboot I notice I get output if the usb to serial is connected while the computer is booting. However once I use it and disconnect it will not work when reconnected.

 

[Yogi-HM]

Got new Macbook Pro and didn't get any further with original Macbook. I was not not able to install PL2303 driver on new Macbook Pro until I did the following.

How to install driver PL2303 CH340 CH341Arduino USB to RS-232 adapter on OSX El Capitan/Yosemite | EsBuzz.net

Then I installed latest drivers found here Prolific PL2303 Drivers

Now able to use usb to serial adaptor on new MacbookPro without any issues. Not sure if this will help anyone with an older Macbook Pro but just sharing.