Hey friends many of our purchasers had asked about this which many of users won't have noticed it. Here in this post am going to describe what is it and what is its importance for any modem. Here below is the snap of what i was talking about :


Its an extendable antenna for more precised network and more accuracy. It is present in most of the Huawei Modems and gives more bandwidth for HSPA & HSPA+ network.
We need to attach an extender to use this network extender slot which looks somewhat like this and you can buy it online from many online shops.