* 7.2 Mbps Unlocked USB Tri-band Modem for AT&T, T-Mobile, and other GSM cellular data services worldwide
* Maximum speeds: 7.2 Mbps download, 5.76 Mbps upload
* Micro SD RAM slot supports up to 16 GB memory and allows the modem to double as a portable storage device
* Plug-in SIM makes it easy to change service providers and give you the
freedom to choose the plan and carrier you want
The 4597 Freedom Modem makes it easy for you to free yourself from expensive 3G service commitments. You can opt for prepaid service, pay-as-you-go service, or a longer-term contract. It's YOUR choice, not the service provider's. This is especially important if you change your home or work location, or if you find a better or cheaper service provider. With the 4597
3G+ Freedom Modem you start and stop mobile broadband service as needed,
change service providers, or change service plans without incurring a financial penalty.
The Model 4597 works using the fastest available mobile broadband services from both AT&T and T-Mobile in the United States.
The modem is activated by plugging in a standard SIM card from AT&T, T-Mobile, or one of the many other compatible service providers worldwide.
With AT&T and T-mobile, both pay-as-you-go and prepaid mobile broadband plans are available. Unlike other modems, the Model 4597 is not locked to a specific service provider. A change to the service provider is accomplished by simply sliding out one provider's SIM an replacing it with another provider's SIM. It takes only seconds.
Mobile broadband service pricing, coverage, and speeds are changing at a rapid rate. Prudent 3G users know that an unlocked modem like the Model 4597 gives them the flexibility they need to obtain the best deal available.
The 4597 support a data rate of up to 7.2 Mbps on downloads and up to 5.76 Mbps on uploads using a wide range of cellular data communications standards, Those standards include T-Mobile's AWS frequencies, needed for the fastest available T-Mobile speeds in the US, as well as the high-speed frequencies used by AT&T.
A micro-SD slot on the modem accepts a memory card of up to 16 GB to provide you with additional portable storage. A pivoting USB connector allows you to plug the modem into a cramped slot, and to orient the modem for the best possible connection in your location. (Usually vertical is best.)
The Model 4597 is made and supported by Zoom Telephonics, a leader in communications products since 1977.