I have a simple task that I am trying to accomplish: attach two USB 3.0 external bus-powered platter-based 2.5" hard drives to a single USB 3.0 port and have them both operate at USB 3.0 speeds.
The Sabrent always shows a USB 2.0 MTT Hub (VID_05E3 PID_0610), and a USB 3.0 Hub (VID_05E3 PID_0616), which is an improvement from the Mituten device.
However, according to USB Device Tree Viewer v3.1.7, when attaching the identical drives to the Sabrent hub, one or both drives seems to randomly get assigned to either the USB 2.0 MTT Hub, or the USB 3.0 Hub. It appears totally random: sometimes it is drive 1 that gets placed on the USB 2.0 MTT Hub, sometimes it is drive 2, and sometimes it is both drives. This defeats the goal of having both drives operating at USB 3.0 speeds.
Am I doing something wrong? Is there a way to consistently get USB 3.0 speeds from two USB 3.0 external hard drives via a single USB 3.0 port?
(Related question on Hardware Recommendations SE: https://hardwarerecs.stackexchange.com/questions/9634/usb3-hub-that-can-handle-2-external-hard-drives-simultaneously)