4-Port USB 3.0 Hub, Data MAX.5 Gbps High Speed Hub SUPPORT 21TB HDD - NO Power Supply Data Hub-BLACK/GRAY PRODUCT FEATURE-USB 3.0 MAX.5 Gbps SUPER SPEED DATA TRANSFER Supports USB 3.0 transfer rates up to 480 Mbps. Backwards compatible with 1.1 devices and hosts Supports up to 127 devices by daisy-chaining multiple hubs Add up to 4 peripherals quickly and easily with the Sabrent HB-UMLS USB 3.0 Hub. Especially great for notebooks which come with only a few ports in an era when you need to attach many USB devices at once, such as a printer, card reader, cell phone, iPod, thumb drive, mouse, keyboard, or an external hard drive. Achieve full 480 Mbps on each port, or daisy chain multiple hubs to a maximum of 127 devices. NOTE:This have two color.We not sure which color you will get.But buth you will like it.