GPS Receiver: Microsoft Pharos GPS-500 III GPS Receiver iGPS-500 Convertible GPS Receiver Design allows you to use one GPS receiver for multiple configurations (i.e. CF, PCMCIA with adapter, USB, sync cable, and Bluetooth) Enhanced sensitivity receiver with SiRFstarIII GSC3f chip set (Fast acquisition time) Connect to your notebook PC, desktop PC, or Tablet PC through a USB cable. Compatible with Microsoft Streets &amp; Trips For Mac users the GPS receiver works in Parallels Desktop without rebooting into Windows so you can use Front Row for a more driver-friendly iTunes interface.