Sierra Wireless USBConnect Lightning Quick Start Manual page 23

ACM says "No SIM"?
Remove the Lightning from the laptop and insert your AT&T
SIM card. See page 6 for details. If you do not have a SIM
card, contact AT&T.
ACM says "Mobile Disabled"?
1. Enable the Lightning:
a. In the ACM window, click the Connections tab.
b. Highlight Adapters and click Turn on GSM. Wait for
the ACM to detect the Lightning.
2. If the ACM still reports "Mobile Disabled, " contact AT&T
Customer Support for assistance.
ACM says "No Wireless Device Detected"?
1. Click Start, and then click Control Panel.
2. Double-click TRU-Install.
3. When you are prompted to switch to modem mode, click
OK.
4. If ACM still reports "No Wireless Device Detected, "
contact AT&T Customer Support for assistance.
23