A list of compatible audiobook devices is located here:
http://www.overdrive.com/resources/drc/ [1]
A list of compatible eBook devices is located here:
http://www.overdrive.com/resources/drc/compatibleebookdevices.aspx [2]
Links:
[1] http://www.overdrive.com/resources/drc/
[2] http://www.overdrive.com/resources/drc/compatibleebookdevices.aspx
[3] http://www.hcpl.net/faq/digital-media-catalog/general-questions