Peplink X Series modular routers and FlexModule expansion cards. The Balance 20X, 310X, 380X and 580X and the EPX and SDX chassis accept FlexModule Mini and FlexModule Plus cards, so a site can add 5G, extra LTE modems, VDSL, SFP+ fiber, PoE ports or edge storage without replacing the router. This category lists the X Series routers and their modules together so you can build the exact configuration you need, and a West Networks engineer can confirm module compatibility before you order.