Q: The computer freezes at the "SGIN" logo screen. Supports the extension of the TF card of 512 GB and the 512 GB SSD can be replaced with a maximum SSD of 1 TB. Multifunctional interface: fast connection with Bluetooth 4.2 and fast WiFi via dual band WiFi, equipped with a headphone jack 3.5 mm x1, USB 3.0 x2, microSD slot x1.