This item is a professional extension hub adapter. Made of , it is durable and practical for long time use. It is widely used for laptop and computers. Also, it is the great and for birthday, wedding, festival, business, trade fair, anniversary celebration, advertising for your friends. Features -Color: Light Grey. -Material: Plastic, aluminum. -Size: About 10.80X2.60X1.20cm/4.24X1.02X0.47in. -Transmission rate: 5GB. - Our product is , high performance. To solve a variety of problems for you. - Applied to your laptops and computer. Small size, lightweight, you can carry this USB hub everywhere. - Multifunctional expansion, five in one can meet your needs and solve your problems. - Using unique voltage-stabilizing chip technology to protect the hard drive to run more smoothly and reliably. - With multi ports, supports mouse, keyboard, USB drive, portable hard drive, and etc. Package list: 3 x date hub