Same as maplins unit: http://www.maplin.co.uk/Module.aspx?ModuleNo=256536
Cheapest SiRF III chipset I could find.
Maplins reviews are good, although state that Win 7 is not compatible.
DealExtreme photo states theirs IS Win 7 compatible.
Although price IS above customs £18 threshold, DX mark it down under threshold anyway & as yet I've never been hit by charges BUT I guess I have to say this - your mileage may vary.
The ND-100S is a compact and portable device, which allows you to carry a GPS receiver for use on your laptop whenever you travel.
The ND-100S requires no battery or cables, only your favorite NMEA compliant navigation software is all thats needed to turn a laptop into a powerful navigation system.
USB 2.0 interface and build-in SiRF Star III GPS chip
Support SBAS (WAAS, EGNOS and RTCM)
GPS Chipset: SiRF Star III
Frequency: L1, 1575.42 MHz
Code: C/A Code
GPS Antenna Type: Built-in ceramic patch antenna (18 x 18 x 4mm)
Acquisition Rate: Hot start 1 sec., average/Warm start 38 sec., average/Cold start 42 sec., average/Reacquisition <1 sec. average
GPS Protocol NMEA 0183v3 GGA (1sec)
VTG is optional.
Baud Rate: 4800 bps
USB Protocol: USB 2.0
Operating Systems: Windows 98 / 2000 / XP / Vista / 7/Mac OS 8&9 / Mac OS10/Linux 7.3 / 8.0 / 9.0
Power: Voltage DC 5.0V, USB bus power; Current: < 55mA
1 * GPS USB dongle
1 * USB cable
1 * Software CD
1 * English user manual