Sprint's latest 4G hotspot, the Overdrive Pro, is coming on March 20, allowing 8 users to connect over wi-fi b/g/n (instead of 5), and access the NAS-enabled microSD storage slot and GPS functionality. It's $50 with a two-year contract. [Slashgear]
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Meanwhile, they just killed off unlimited 4G data, and thusly any market for this device as well.