Huawei E5573 is a 4G mobile hotspot with LTE Category 4 technology, so it can support the download speed to 150mbps and upload speed to 50mbps. On the front, there are two single LED indicators for battery and signal strength. The backcover of Huawei E5573 is removable, and it seems Huawei E5573 have the external antenna connectors. Like its predecessors Huawei E5372, Huawei E5573 could works well on 4G/LTE network, while 3G and 2G networks are backward. HUAWEI 4G MOBILE WIFI E5573Bs-320; LTE Category 4 Mobile Hotspot; DL 150Mbps/UL 50Mbps; Support up to 10 wireless terminals; Wi-Fi 802.11 a/b/g/n.