This is a 4-port USB 3.1 Gen 1 hub that allows you to use four USB-A devices with a computer equipped with a USB Type-C port. I purchased this and used it at home, but I no longer have a need for it, so I am selling it. Model Number: U3HC-A430B Cable Length: Approximately 30cm Thickness: Approximately 10mm Weight: Approximately 37.0g Thank you for looking.