Astrotek USB 2.0 Y Splitter Cable - Type A Male to Mini B 5 pins 1m + USB Type A Male 2m Black Colour Power Adapter Hub Charging The ASTROTEK USB Y Cable is designed specifically for External Hard Drives which require additional power to run. This situation can come up on older HDDs which were more thirsty, or if your USB sockets throttle power output (like on some laptops). • 2 x USB A Male to 1 x USB Mini-B 5 Pin Male • Transmission Speeds up to 480Mbps • Suitable for portable Hard Drives which need extra power to operate