The instructions to install the driver that I used are, from Terminal: shell$ tar zxvf

The driver I used can be downloaded here:

The original WLANBook Blog Post is here: The ATEN adapter is based on the PL2303 (H, HX, X chip version) USB-to-Serial Bridge Controller, so these instructions should work with a variety of adapters other than the ATEN (including the Tripp Lite USB to Serial DB9M Adapter (U209-000-R) ($8)). In order to bring light to this astonishingly good news, I’m re-blogging the instructions with appropriate credit. So, I opted to try it out under Mavericks as well and…it works. I borrowed an adapter from a friend of mine, the ATEN USB to PDA/Serial (DB9) Adapter w/ PC & Mac Drivers UC232A ($19.22), to see if it would work.Īfter 3+ hours of trying to get various drivers working, I was no closer to a working solution.įortunately, my same friend was able to find the two year-old blog post documenting a setup that worked under Mountain Lion. Keyspan does not show a driver that supports OS X 10.9 and loading the 10.8 driver resulted in no change from not having the driver. I’ve always been able to get it to work properly, but recently, with my upgrade to a 15″ MacBook Pro Retina Display and subsequent upgrade to OS X 10.9 Mavericks, my trusty little friend may have met his day. I’ve carried a Keyspan USA-19HS with me in my briefcase for close to a decade (maybe more). I often do work that requires a serial port. Appears that with the coming of OS X 10.9 Mavericks, we are once again faced with various peripherals that cease to function correctly.

Securecrt mac serial usb