Expand by connecting up to 4 USB 2.0, or 1.1 devices to any USB 2.0 capable computer Compatible with all Windows/Mac/Linux systems. Supports USB 2.0 transfer rates up to 480 Mbps. Backwards compatible with 1.1 devices and hosts Reverse Compatible with USB 1.1 4 per-port LEDs. Sleek black finish. All 4 ports on one side to minimize cable clutter.