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AT&T USBConnect Shockwave - Refurbished, Like New
No Contract Upgrade - Ships on 10/27/2015


Item Number: 3137
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This refurbished no-contract modem is "like new" and is perfect for existing AT&T customers who want to swap to a more current device or need to replace a lost/broken device, but don't want to alter their contract (purchasing this device will NOT extend or alter your AT&T contract - once you get the new device, simply swap the SIM card from your old device to the new one). This device can also be used for AT&T's month-to-month service (you will need to contact AT&T after receiving the modem to sign up for service and acquire a SIM card). *the Shockwave has a standard-sized SIM slot - if you plan to use a microSIM, you'll need the micro-to-standard SIM adapter

Refurbished devices fall under 3Gstore's standard 30-day return policy (read more at There is no manufacturer's warranty on refurbished devices.

Enhanced performance on the nation's fastest 3G network. Innovative swivel hinge USB connector. Compatible with AT&T's High Speed Packet Access (HSPA) 7.2 technology. preloaded with AT&T Communication Manager (ACM) 7.0 software.

You may need the AT&T Communication Manager to activate your modem - if you don't already have it installed, you can download it from AT&T's website


  • USB connection: Compact modem plugs directly into your laptops's USB port.
  • 4G: The nation's fastest mobile broadband network is getting faster with 4G
  • Expandable Memory: Integrated microSD card slot provides a portable file transfer and storage solution expandable up to 32 GB (cards sold separately).
  • Global Connectivity: Travel internationally and stay connected globally with GSM global connection capability in more than 200 countries (International roaming data rates apply outside of the U.S. Visit & select "Data Plans/Packages")


  • GSM/GPRS - 850/900/1800/1900 MHz
  • 4G Speeds - HSPA+ with enhanced backhaul in limited areas. See for availability
  • EDGE high speed data network - capable
  • Antenna - Built-in antenna and external antenna port (external antennas sold separately)
  • Supported OS - Microsoft® Windows® 7, Vista, XP SP3, Apple® Mac® OS (v10.4 or later)

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All Reviews (2)

Only customers who bought this item from 3Gstore can write a review - these are all verified 3Gstore purchases

Date Added: 08/01/2015 by STEVEN B. (DOUGLAS, WY)
Happy customer. Nuff said.

Date Added: 02/11/2013 by Steve B. (Omaha, NE)
Great item at a great price. Simply install the free sim from AT&T and the modem is up and running.

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Q & A
Got questions about this product? Here you can view questions that other customers have asked (and the answers!). If you have a question that hasn't been answered below, you may submit a new question and 3Gstore will answer it!

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Sierra 308/ USBConnect Shockwave Manual Download installation guide/manual

Purchasing this product gets you access to the following exclusive 3Gstore resources:

Sierra Wireless Gaming Tip Sheet 09/22/2015
Sierra Wireless Ping Test Tip Sheet 09/16/2015
Sierra Wireless MAC Filtering Address Tip Sheet 09/16/2015
Sierra Wireless USB Serial Drivers Tip Sheet 09/16/2015
Dynamic DNS Tip Sheet 09/03/2015
IP Camera Router Tip Sheet 09/02/2015
AT&T Communication Manager Download

If you already purchased this item from 3Gstore, Log In to the support portal to access these downloads.
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