
G-Mouse GPS Receiver User Manual 
Page 8 
2) While the windows of [
Control Panel] shows up, 
double click the [System], [Hardware] and click the 
button [Device Manager]. Expend the tree node 
[Ports(COM&LPT)], you should see the item 
[Prolific USB-to Serial Comm Port (COM#)
]. If so, 
it means you can use G-MR correctly now.  
3) The “#”
 mark means the COM port ID simulated by 
the USB adapter. Most of the GPS navigate software 
use COM1 as default settings. You should change it 
to the corresponding port ID mapped by the USB 
adapter, and G-
Mouse can report GPS message 
correctly.   
 The G-MR is warranted to be free from defect in materials and functions for one year from the 
date of purchase. Any failure of this product within the period under normal conditions will be replaced 
at no charge to the customers. 
This warranty does not cover failures due to abuse, misuse, accident, or unauthorized alteration or 
repairs, inappropriate disassemble. 
6.1 Satellite Signal Problem
It is normal if you found that the GPS satellite signal very low or absolute missing:   
Ø While you are in a tunnel, GPS signal isolated. 
Ø There is something cover above, GPS signal isolated.