Featuring a clean, compact design, this standard USB hub enables two devices to share a single available USB port with full USB 2.0 compatibility and performance. Common Uses Common uses include connecting both keyboard and mouse via a single USB cable, for industrial environments where space is a premium, and for any situation where a simple USB 2 port splitter is required. Power This bus-powered hub shares available power (500mA) from the single upstream port to each of the two downstream ports. Because power is shared, devices connected via the hub should be low powered (keyboards, mice, etc), or self-powered (printers, powered hubs, powered external hard drives). Not for charging.