Unlocked SIM Slot for TP-Link Archer MR600 AC1200 Mbps 4G+ Dual Band 4G/3G Mobile Wi-Fi Encouragement Parental Control & Guest Network: Boost Your 4G+ Velocity supports 4G+ Cat6, which doubled the speed of 4G LTE by using carrier aggregation technology to increase data speeds to 300 Mbps. Enjoy uninterrupted 4K movies, file downloads in a matter of seconds, and seamless online gaming by plugging in your SIM card. Con's Fully Gigabit Ports