Power limit for this hub when not using a PD input

#1


My intention is to use this hub on my Mac Mini to isolate high power and high speed devices from USB wireless peripherals, because… you know, the USB 3.0 signal interferes with wireless connectivities such as 2.4GHz and Bluetooth.

I would like to know if there is a number or yes/no answer for my power draw concern. I am well aware that an unpowered USB-A hub is only capable of powering one external 2.5 hard drive. But for USB-C hub it’s a different story. Since I am using this hub on a Mac Mini desktop, I would like to not having to plug in an extra permanent power supply just for this hub. I am planning on using all three of the data ports on this hub for two SSD and one 2.5in HDD. Let me know if you have any insight of this. Thanks!

#3

Well, I end up buying this hub. After a quick test the results were unsatisfactory.

Combinations below were tested twice with and without external power. Power supplied by Anker 45W USB-C power supply and 10ft charging cable by Anker.

Hub connects to M1 Mac mini directly, Crucial X8 1TB read/write ~300mb/s. In comparison when connected directly said SSD R/W approaches 800mb/s. Test was done using BlackMagic Disk Speed Test.

Hub drops connection (hard resets) when three SSDs are connected and simultaneously doing read and writes. It will still drop connection even when power is supplied with the PD port.

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#4

It now seems like the M.2 enclosures by SSK is causing the issue. See attached image. I have hooked up the Crucial X8, a WD easystore 1TB, and a 5TB. No issue when loading them up with reads and writes, even without USB-C power input.

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