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10.7: Prolific 2303 based USB to Serial adapter drivers Other Hardware
Aug 02, '11 07:30:00AM • Contributed by: ruedu
If you have a Prolific 2303 based USB to serial adapter and it no longer works under Lion, installing the Snow Leopard 64-bit driver may fix the issue.

Download the driver from Prolific's site here.

[crarko adds: I post this as a generic hint; if a device breaks under Lion check with the vendor to see if 64-bit drivers are available for it.]
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10.7: Prolific 2303 based USB to Serial adapter drivers
Authored by: karog on Aug 02, '11 08:07:14AM

deleted by author - commented on wrong post

Edited on Aug 02, '11 08:08:16AM by karog



[ Reply to This | # ]
10.7: Prolific 2303 based USB to Serial adapter drivers
Authored by: gr8tfly on Aug 02, '11 01:02:54PM

I can confirm the Prolific 2303 64-bit driver works with IOGEAR adapters on Lioin & SL 64-bit.

As a side note, Keyspan has 64-bit drivers, also. I've confirmed they work with both Lion 64-bit and SL 64-bit.



[ Reply to This | # ]
10.7: Prolific 2303 based USB to Serial adapter drivers
Authored by: Robert Hancock on Aug 02, '11 02:52:16PM

I use the osx-pl2303.kext (242 KB) dated February 17, 2010 from BJA Electronics on my Lion install and it works fine with my Prolific based USB to Serial cable to control a Pix from the command line.



[ Reply to This | # ]
10.7: Prolific 2303 based USB to Serial adapter drivers
Authored by: johnalex on Aug 03, '11 04:06:19AM

I tried this, but the driver didn't work for me. In my case, I installed the driver from failberg:

https://github.com/failberg/osx-pl2303

Note the warning: "A very unofficial fork of the Prolific PL2303 driver." However, this driver worked when the official driver did not.



[ Reply to This | # ]
10.7: Prolific 2303 based USB to Serial adapter drivers
Authored by: tamnoon on Aug 11, '11 10:30:28AM

Same experience here as johnalex. Official driver worked under Snow Leopard, but not under Lion. Although the driver was loaded (confirmed through About This Mac --> System Report --> USB), "Load My Tracks" could not find my Garmin GPS.

With this unofficial fork, it works fine again. I can't help but wonder for how long, though...



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