Name: AT&T Go Phone U2800A phone
Probably identical to the Australian sold Huawei U2800 phone minus camera and MicroSD slot. The Huawei U2800 documentation found on AT&T's website indicate this device can become a USB modem but I've yet to find any software or drivers to recognize this device. Section 7.3 of the FAQ describes how to use the phone as a modem. http://huaweimobile.com.au/uploads/content/faqs/HUAWEI_U2800_FAQ.pdf The AT&T version of the manual http://www.wireless.att.com/support_static_files/manuals/ATT_U2800a.pdf section 17 refers to USB modem tethering as well.