Recent PL-2303 driver pushed by Microsoft responds slowly

1

After an earlier problem report, I was using driver version 2.1.30.193 under Windows 7 64-bit, which worked well from my perspective. This month, Microsoft update pushed version 3.4.48.272 of the driver onto my machine. Now, my terminal emulator responds slowly. I can easily type ahead several characters before the emulator echos them back to the screen.

The behavior is definitely related to the version of the driver. When I use the older version, the terminal response is immediate. When I use the newer version, the response is sluggish. It’s very counter-productive.

Because the newer version is pushed by Microsoft update, it sometimes installs without my consent. If I move the adapter to a different USB port, it will use the newer driver automatically, and I have to go through the process of reinstalling the older driver.

2

Hi Jim,

Thanks for posting! In our tests the 3.4.48.272 driver didn’t cause any performance issues but since the older driver is a better choice for your machine I’m sure it’s frustrating to have the newer driver re-installed every time you reconnect the cable

You set Windows to allow you to choose what to do when new hardware is connected. To change this setting follow these steps:

Click on the Start menu --> right-click on Computer and click Properties.

On the left of the System dialog box, --> select Advanced System Settings.

Now navigate to Hardware tab and click --> Windows Update Driver Settings.

Here you’ll be able to tell Windows to let you choose what to do when you connect a new piece of hardware.

I hope this helps, let me know how it goes!

Thanks,
Jerome.