I recommend you get a device that needs no driver: one that works as USB pen drive and can be accessed from the Finder.
This feature is often called “USB Mass Storage Device/Mode”.
Or one that has a removable SD memory card that you can access using Finder.
I use the Wintec WBT-202 device, but that has been discontinued.
The Canmore GP-102+ appears to be a good choice: http://robservatory.com/review-canmore-g-porter-gp-102-data-logger/
From the HoudahGeo User Guide
For the use with HoudahGeo, you need a device that has a track logging feature. This is available in most handheld receivers. Car navigation devices however usually do not have this ability.
Key properties to look for in a GPS track logger:
Does not need an extra driver. Ideally mounts as USB pen drive
Writes log files in a format supported by GPSBabel.org, or comes with Mac software to convert the logs to standard GPX or NMEA. Other options for converting log files include applications like HoudahGPS, GPSBabel, or LoadMyTracks.
Removable battery if you plan longer trips without access to power
Removable memory card if you plan longer trips without your laptop. A removable SD card also has the advantage of fulfilling the first requirement
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