The ND-100S USB GPS dongle is a highly sensitive GPS receiver that is ideally suited for use with laptops, notebooks, tablets and UMPC devices. Low power consumption and a highly sensitive SiRF Star III GPS antenna makes acquiring even the weakest of satellite signals not a problem for the ND-100S. Satellite-based augmentation systems, such as WAAS and EGNOS are supported for even greater accuracy.Get great GPS performance even without utilizing the included USB extension cable. You can plug the ND-100S directly into your notebook, laptop or tablet, comparable USB GPS dongles on the market require that you use a USB extension cable to extend the GPS receiver away from the host device so that a GPS position fix can be obtained. Notebooks, laptops and tablets produce a high level of electrical interference that usually weakens GPS signals within a close proximity. This is not the case with the ND-100S USB GPS Dongle! The built-in antenna with factory tuned RF circuitry,blocks unwanted interference and allows the ND-100S to quickly obtain GPS position fixes.The ND-100S USB GPS Receiver Dongle is compatible with just about any GPS mapping or navigation software on the market that complies with NMEA standards. It also has the capability to show your position on Google Maps and work as a logger too.ND-100S Package Contents: ND-100S Main Unit. USB Extension Cable. Quick Start Guide. Software CD (User Guide, Drivers, etc)