TP-LINK TL-MR 3G/4G Wireless N Portable Router Review. Even though it's listed as being a “N” wireless signal, I was still a bit. TP-Link TL-MR Portable 3G/4G Wireless N Router. out of 5 The device has a portable design and can be easily adjusted in your pocket. You can. The TP Link TL MR 3G 4G Wireless N Portable Router enables you to go online anytime you please. Its compact design and abundance of features, make it.