This dual 4K docking station expands the display capabilities of your Mac or Windows laptop across 2 Ultra HD 4K monitors Connect your laptop to 2x Display Port or 2x HDMI displays (or 1x DP + 1x HDMI) - USB 3. 0 docking station for USB-A or USB-C PC laptops The port replicator turns your laptop into a workstation with 6x USB 3. 0 (Type A) ports plus a Gb E port and headphone and mic input audio jack ports To add charging for USBC laptops add the HB30C1A1CPD USB C adapter (sold separately)