can you power on individual drives?

The product does not support powering on individual drives. It supports single drive mode and multiple RAID configurations, but there is no mention of individual drive power control.

Questions & Answers: Mediasonic Raid USB 3.1 Gen 2 Type C 4 Bay 3.5? SATA Hard Drive Enclosure with USB 3.1 Hub Feature - USB-C 3.1 Gen 2 10Gbps (HFR7-SU31CH) (HFR7-SU31CH)

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Mediasonic Raid USB 3.1 Gen 2 Type C 4 Bay 3.5? SATA Hard Drive Enclosure with USB 3.1 Hub Feature - USB-C 3.1 Gen 2 10Gbps (HFR7-SU31CH) (HFR7-SU31CH)

Hardware embedded raid controller built-in on board with one-button control, support Single Drive Mode, Raid 0 / 1. NO Raid 5 Support
Built-In USB Hub provides easy access to additional USB Type A and USB Type C connection for expansion
Transfer rate up to 10Gbps via USB 3.1 Gen 2. USB-C to USB -C with E-Mark IC cable is included. (3.3ft)
Support 3.5 SATA I / II / III hard disk drive up to 16TB per drive, and 2.5 SATA SSD / HDD
Support UASP, S.M.A.R.T, Smart Fan, and Power On / Off in synchronization with computer (Does not support auto Power-On due to power failure). It does NOT support Raid 5

$299^.99 –