Review on DIYmall VK-172 VK 172 Gmouse G-Mouse USB GPS Dongle Glonass: Windows 10/8/7/vista/XP/Raspberry PI Vehicle Aviation Tracker (1pc) by Trae Joubert

Maybe it's a fake ublox 8 chip, not original NEO-M8N I managed to update the firmware to 3.0.1 but the performance of the chip is pretty bad. Compared to the ublox 7 in the VK162 USB mouse, it catches 2-4 fewer satellites and has significantly lower accuracy. According to ublox's website, unlicensed fake NEO-M8N modules are a big problem and poor performance is a typical symptom. Receiving the satellite signal is much faster and the accuracy is higher despite the smaller (18mm) antenna.