Although Drobo and DroboPro can connect to your computer with a USB 1.1 or 2.0 port, you won't see optimal performance without the hi-speed 2.0 connection. You can check which levels of USB ports your Windows XP computer offers, and you can verify that your hi-speed USB 2.0 ports are enabled. Checking USB Port Levels. 1  On your host computer, right-click the My Computer icon and select Manage. 2  Note: Windows XP users may need to click Start to access the My Computer icon. 3  Click the Device Manager icon.