We-Fix-Internet - FYI, So Far, Only Singtel Provide " Optical Network Router " which acts as a modem and router. All the 4 ports behind can be randomly connected. And this only
HUAWEI B535 Home Broadband Modem User Guide - Manuals+
Huawei B315, 4G Wi-Fi Router Black, with 6GB EE Data Sim Card High-speed Wireless Home Router, No Configuration Required, Unlocked to all Networks : Amazon.co.uk: Computers & Accessories