The GlobalSAT BU-353 uses a Prolific PL2303 USB chip. In order to use this device with a MacOS computer the proper USB driver software must be loaded. As the MacOS system has progressed in its System 10 evolution, the USB driver software from Prolific has been updated to keep pace. If an out-of-date USB driver is loaded into the MacOS 10 operating system, there may be problems. A typical problem is for the USB system to hang, which will prevent the system from shutting down. The USB driver must be updated to keep pace with the MacOS system version.
One of my Macintosh computers is running MacOS 10.12.6, also called the SIERRA version. Without the proper USB driver, using the BU-353 GPS receiver caused the USB system to hang, and it was impossible to shut down the computer properly. An update to the driver was necessary.
To find an updated Prolific PL2303 USB driver for MacOS 10.12, I visited the Prolific website, and downloaded the appropriate driver software:
- Browse to http://www.prolific.com.tw/US/CustomerLogin.aspx
- Sign-in using the id and password combination guest and guest
- Follow hypertext link to http://www.prolific.com.tw/US/supportDownload.aspx?FileType=56&FileID=133&pcid=85&Page=0
- Scroll to find "Mac OS X Universal Binary Driver v1.6.1 (PKG file format)”
- Download the .zip archive file at http://www.prolific.com.tw/admin/Technology/GetFile.ashx?fileID=352
- Extract the payload from the .zip archive and move to a convenient location in your home directory
- Open the .pdf file and follow the installation instructions
Checking for Installation
To verify you have installed the driver and it's the proper version, plug in the BU-353 to a USB port, then run the System Report (under "About this Mac" under Apple Menu). You should find the driver as shown below: