Check the listing for details. HGST ME198407 JMS539 PCB Touro Desk Pro USB 3.0 Controller Board Replacement $M. Condition: Open box. Listed at 3.99 USD. Check Here for Quantity 32 Pricing Check Here for Quantity 100 Pricing Check also our 12V 1.5A AC Power Adapter Special Check also our 4ft USB 3.0 Type A to Micro B Cable Special HGST ME198407 JMS539 PCB Touro Desk Pro USB 3.0 Controller Board Replacement The board is pulled out of brand new HGST Touro Desk PRO External Hard Drive USB 3.0 (HTOLDNB10001BBB) HTOLDNB10001BBB HTOLDNB20001BBBHTOLDNB30001BBBHTOLDNB40001BBB Interface: USB 3.0 compliant, USB 2.0 compatible Connector: USB 3.0, 9-pin Standard-B socket/USB 2.0, 5-pin Standard-B socket Data Transfer Rate: USB 3.0: up to 5 Gbit/sec; USB 2.0: up to 480 Mbit/sec Power: 12 VDC, 1.5A Operating Temp: 41° – 95°F (5° – 35°C) Relative Humidity: 20-80% non-condensing Operating Systems: Windows 7™, Windows® Vista, Windows® XP and Mac OS® X (10.5 or newer)