How many 27" Thunderbolt Displays does the 2020 M1 Mac mini support? Apple's website does state that &quot;One display with up to 6K resolution at 60Hz connected via Thunderbolt&quot; so it's probably not possible as per this question regarding how M1 powered MacBooks supporting only a single 27&quot; Thunderbolt Display as follows:

However, would an M1 Mac mini support dual 27&quot; Thunderbolt Displays if connected as follows?

If they cannot be daisy chained via Thunderbolt 1 would a second Thunderbolt Adapter perhaps change things if used as follows:

I've seen how the M1 can be connected up to 6x displays in total using Display Link. However, I'm specifically interested in using the 2x 27&quot; Thunderbolt displays I already have.
If you've got this working with a Mac mini, please share your experience. Thunderbolt 1x supported daisy chaining up to 6x 27&quot; Thunderbolt displays and it would be very interesting to know if this is at all a possibility?
Neither of those two suggested display configurations are possible, I'm afraid. You can only connect 1 of the 27&quot; Thunderbolt displays to the Thunderbolt 3 ports on the M1 Mac Mini. It doesn't matter if you daisy chain two monitors or plug them into each of their own Thunderbolt 3 ports - it still won't work.
The only way to natively hook up 2 displays to the M1 Mac Mini is to drive one display (and one display only) through the Thunderbolt 3 port and the other through the HDMI port. Obviously the 27&quot; Thunderbolt Display does not connect with the HDMI port.
When I say natively, I mean that it is ofcourse possible to use non-native display options - most popular would be a variety of DisplayLink products.
Adapters such as this do exist that converts the HDMI output to a USB-C style DisplayPort output. I guess you could plug a Thunderbolt 3 to Thunderbolt 2 adapter into that, but I doubt that it would work.