TP-Link is a brand of Pulian Technology Co., Ltd., with products covering 128 countries around the world, with excellent R&D technology and product control capabilities, and is a well-known network and communication brand in China. TP-Link's portable routers, TL-TR861 and TL-MR11U, have both won the 2013 German IF Industrial Design Award. The TL-TR861 also won the 2013 Red Dot Award in Germany, and the TL-MR11U also won the 2012 CES "Innovative Design and Engineering Award". Both of these support 3G SIM card Internet access, implement the 802.11n wireless standard, and can even be used as a mobile power supply to power mobile phones, depending on the capacity, the price ranges from 149 yuan to 389 yuan, and the cost performance is very considerable. In addition, TP-Link also has a TL-TR961, which supports 4G SIM card Internet access. TP-Link's low-end portable routers have problems such as frequent disconnections, unstable networks, and poor shell workmanship, so it is more recommended to buy higher-end models such as TL-TR861 and TL-MR11U.