2 Pcs USB GPS Receiver Dongle for laptop PCs At a Glance... GPS receiver USB dongle for laptop PCs Accurate within up 1 to 5 meters Low power consumption Quick reacquisition of satellites **This GPS receiver is compatible with all major brands of GPS computer software. This model does not come with any GPS map software. Manufacturer Specifications Primary Function: GPS receiver USB dongle Tracks up to 20 satellites. Receiver: L1, C/A code Max update rate: 1 HZ Acquisition time Reacquisition: 0.1 sec average Hot start: 1 sec. Warm start: 38 sec. Cold start: 42 sec. Position Accuracy Non DGPS (Differential GPS) Position: 5-25 meter CEP without SA Velocity: 0.1 meters/second, without SA Time: 1 microsecond synchronized GPS time DGPS (Differential GPS) Position: 1 to 5 meters Velocity: 0.05 meters/second EGNOS/WAAS/Beacon Position < 2.2 meters, horizontal 95% of time < 5 meters vertical 95% of time Dynamic Conditions: Altitude: 18,000 meters (60,000 feet ) max Velocity 515 meters (700 knots) / second max Acceleration: 4 G, max Jerk: 20 meters/second, max Antenna Type: Built in Patch Antenna Minimum signal tracked: -159dBm Dimensions: 74 x 25 x 14 mm Operating temperature: -40 to +80 Storage temperature: -45 to +100 Operating humidity: 5% to 95% No condensing. Power consumption: < 80mA at 4.5- 5.5V input Protocol and interface NMEA output protocol: V.2.2 Baud rate: 4800 bps Data bit: 8 Parity: N Stop bit: 1 Interface: USB port Color: Blue Manufacturer Ref: ZMZP1KZL0U Product Notes **This model is compatible with most brands of GPS software - however hardware specific software such as Garmin may not run on this unit. As the wholesaler, we provides the GPS-enabled hardware only, not the software. we provides no warranty or customer support regarding GPS software. we cannot provide downloads / links / advice regarding GPS software. Any software installation you undertake should be performed or supervised by a professional. Package Contents Model CVGI-B07 GPS Receiver USB Adapter CD (functionality software to allow this dongle to be used with 32 bit Windows XP and Windows Vista operating systems) USB cable Display/storage box FAQ - Frequently Asked Questions Can I just plug this USB dongle into my laptop and start using GPS right away? In addition to this USB dongle, you will also need to install GPS navigation software (not included with this GPS receiver) on your computer. Once your computer has GPS software, then you are ready to plug in this GPS receiver and start driving.