Summary: Although my general opinion of Cradlepoint products is very good, and if you are aware of the limitations of this product, it is certainly a good wireless router. My problem is that it is no longer supported by Cradlepoint and the router will not operate with the AT&T Beam usb air cards. In fairness to Cradlepoint, they will tell you this but my suggestion is that you verify the specifications of this router before you purchase it.
Summary: I bought this product to share a wireless internet modem I have (ATT USBConnect Momentum 4G). The product is great and works as advertised. It allows to share multiple computers with just one usb modem. Basic setup was easy. It even has a setup wizard for beginners (to set the most basic router features like wifi and security). And advanced users have many more configuration options (like Dinamic DNS, port forwarding and others).
Summary: Good router. Works fine with my Huawei E1556 using Internet Movil service from TIGO here in Guatemala. The fact that it automatically resets the WAN connection if there are performance issues is quite handy -- for me virtually eliminates the need to reset the router manually and often goes entirely unnoticed.
Summary: The CradlePoint router was very easy to install using an air card. The range is significantly less than the 300-600 feet advertised, but I plan to install a repeater to reach the entire multi-level house. Overall, the router works well!
The MBR-900 is the right choice for the new Sprint air card
2 January 2012
Summary: I was having issues with another CP recognizing my New Sprint card. (A portable model - CTR-35) CP offered a flash-fix but with little satisfaction to function. I decided to try this model being their brand new home model with two antennas for further reception. I made the right decision. The MBR-900 has a separate area in the setup menu specifically for air cards and it recognized my card right away.
This is a great product far superior to their last effort for Kayocera,
5 August 2011
Summary: I received this router 60 days ago and set it up in about 20 min, it has not been off since, nor has it gone down. My last router would drop out about 6 times a day and would be slow during busy times. I use an unlimited Altel air card that is now Verizon and I have had no problems with either the air card nor the router. I also have a Thunderbolt phone with the Hot Spot turned on and the router and air card provides identical service to the 4G Thunderbolt.