Hi-Speed USB 2.0 Four-Port Hub lets you connect up to four peripherals quickly and easily. Four downstream USB ports offer Plug-and-Play connectivity to your USB 1.1 (low-speed and full-speed) and USB 2.0 (high-speed) devices and such peripherals asscanners, printers, mass-storage drives, and high-resolution cameras. Design features two top-loading USB ports for quick access and requires no external power supply for most devices. The hub is self-powered and allows cascading so up to 127 USB devices can be connected to a single port. Unique design allows the four downstream ports to be positioned toward the back of the desktop for efficient cable management or to the front for easier port access. Hub includes internal weight and stay-put pads to keep it anchored to your desk. LEDs allow you to easily monitor master power and individual ports. USB 2.0 Four-Port Hub prevents damage to your computer and devices with overcurrent protection.