Eurocom M4 - Manual (Page 206)

Modules
7 - 76 EM820W 3G Module PIN Code & Power-Saving
7
EM820W 3G Module PIN Code & Power-Saving
Note that there may be some issues when a PIN Code is set for the EM820W 3G
module (if you are unsure of your module version contact your distributor/supplier)
in Windows, if Mobile Broadband has been turned off, and the system has resumed
from a power-saving state. To prevent any issues it is recommended that you sim-
ply do not enable a PIN for the EM820W 3G module. The following provides in-
structions for disabling the PIN code; for specific instructions on resolving the issue
where “Insert a SIM” appears in the connection see
“Resolving the “Insert a SIM”
issue with the 3G Module (Windows 8.1)” on page 8 - 17 .
Disabling a PIN code for a 3G Module
1. Go to the Charms Bar.
2. Click Change PC Settings.
Figure 7 - 64
Change PC Settings