Please make sure your laptop C port supports DP Alt mode, if you are not sure you can check with us. Reliable Connection & Speedy Data Transfer: Built in 5Gbps USB 3.0 Port, transfer HD movie in a moment. 104MB/s SD/TF Compatible with SD, SDHC, SDXC, MicroSD, MicroSDHC, Micro SDXC cards are supported up to 104MB/s. 87W Power Delivery: By connecting your laptop's original USB C charger to the PD port on the hub, you can safely charge your laptop with up to 87W of power. USB C to Triple Display: USB C to Dual HDMI and Dispaly port, Please note that the laptop screen will not display when 2 HDMI and DP ports are connected together. 9-in-1 Dual HDMI USB C Hub: 2 HDMI, DP, 5Gbps USB 3.0, 2 USB 2.0, SD&Micro SD Card Reader, USB C PD Port.