Preserve the convenience of one-cable connectivity to your entire desktop setup with the SD3650 Universal USB 3.0 Docking Station from Kensington, a trusted leader in productivity solutions for more than 30 years. What makes the SD3650 unique from the SD3600 is that you can output dual HD video using DisplayPort and HDMI ports, plus we increased the USB 3.0 accessory expansion ports to four, ideal for a flash drive so it can transfer data at 5Gbps. The dock also features Zero Footprint Mounting, so it can be mounted to the back of a VESA-compatible monitor using a Docking Station Mount (sold separately), perfect for desks with limited space.Preserve the convenience of one-cable connectivity to your entire desktop setup with the SD3650 Universal USB 3.0 Docking Station from Kensington, a trusted leader in productivity solutions for more than 30 years. What makes the SD3650 unique from the SD3600 is that you can output dual HD video using DisplayPort and HDMI ports, plus we increased the USB 3.0 accessory expansion ports to four, ideal for a flash drive so it can transfer data at 5Gbps. The dock also features Zero Footprint Mounting, so it can be mounted to the back of a VESA-compatible monitor using a Docking Station Mount (sold separately), perfect for desks with limited space.