AT&T announced on Tuesday that its first 4G LTE devices, including the USBConnect Momentum 4G and the Mobile Hotspot Elevate 4G, will be available in-store and online later this month. The USBConnect Momentum 4G and Mobile Hotspot Elevate 4G will launch on August 21st for $49.99 and $69.99, respectively, each with a new two-year agreement and after a $50 mail-in rebate. AT&T’s existing USBConnect Adrenaline modem will receive a software update on August 26th that will add support for the carrier’s 4G LTE network. AT&T will charge $50 per month for a 5GB data plan on its LTE network and any additional data past the 5GB cap will cost $10 per gigabyte. AT&T’s LTE network will first launch in Atlanta, Chicago, Dallas, Houston and San Antonio this summer, and will eventually expand to at least 15 markets later this year.