MOFI4500-4GXeLTE-SIM3 4G/LTE Router AT&T T-Mobile with Embedded SIM with Band 12 4G LTE Rugged Metal Enterprise Router with Embedded SIM for AT&T or T-Mobile including band 12 Front USB 2.0 port for your 3G/4G/LTE modem T-Mobile recommends using this router as this is the best and fastest product on T-Mobile Fail Over, IP Pass throught, Captive Port and more Extended WiFi Range with build in Wireless Repeater Mode