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I am using the free VM Ware Fusion to run WIN 11. Performance is fantastic (see my speedtest above).
One follow-up question as you are using a very similar system and use case that I am purchasing Mac Mini Pro, OWC IM2 and 9900 Pro. Does your SSD power off when you put the system to sleep. I assume so because you use onboard power, but want to confirm
 
One follow-up question as you are using a very similar system and use case that I am purchasing Mac Mini Pro, OWC IM2 and 9900 Pro. Does your SSD power off when you put the system to sleep. I assume so because you use onboard power, but want to confirm
I never sleep it; it is either always on or shutdown. I can tell you from my UPS meter that the OWC/990 uses ~6 w at idle. I don't know if the mini cuts power to the TB ports if you sleep it.
 
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I never sleep it; it is either always on or shutdown. I can tell you from my UPS meter that the OWC/990 uses ~6 w at idle. I don't know if the mini cuts power to the TB ports if you sleep it.
Does your OWC 1M2's LED stay on when your Mac mini sleeps?

When my M4 Mac mini sleeps, my Qwiizlab's green LED stays on, indicating it's still connected at 40 Gbps USB 4. However, the drive must be in sleep mode because given time, the SSD's temperature will drop to below 30C. The Qwiizlab's LED only goes off when the Mac mini has been shut down. See post #31.

BTW, I re-applied the thermal pads in my Qwiizlab enclosure, and after that, even with continuous writes for 15 minutes the temperature of my 4 TB Samsung 990 Pro did not rise above 46C. This is a massive improvement because prior to that, continuous writes for that period of time would bring the temp to over 50C, and after nearly an hour of continuous writes, it would it hit 55C or so.

As for power usage, my setup uses 5.5 W at idle and 7.5 W to 8 Watts during writes.
 
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It remains a mystery why the OWC doesn't fully support TB3 while Qwiizlab apparently does even though they both use the same chip set and are billed as USB4 and not TB.
It is not as reliable, there are bugs and issues when it is enabled. Reliability is our #1 priority, even down to having a better thermal design than every other enclosure out there. There is no benefit on any Thunderbolt PC since 2020. No benefit on any Mac with Apple Silicon. No benefit on any Windows PC with USB4. And there is a quickly diminishing number of intel Macs in service where customers would have an issue with 10G speed or even notice a difference in real world usage. Mystery no more :)

The 1m2 is a fantastic solution as it is. There are no firmware updates needed for it. Plug and play out of the box. It is rock solid reliable and that is what matters when protecting and storing your data. And there is no thermal throttling with even the most power and heat intensive drives out there.
 
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It is not as reliable, there are bugs and issues when it is enabled. Reliability is our #1 priority, even down to having a better thermal design than every other enclosure out there. There is no benefit on any Thunderbolt PC since 2020. No benefit on any Mac with Apple Silicon. No benefit on any Windows PC with USB4. And there is a quickly diminishing number of intel Macs in service where customers would have an issue with 10G speed or even notice a difference in real world usage. Mystery no more :)

The 1m2 is a fantastic solution as it is. There are no firmware updates needed for it. Plug and play out of the box. It is rock solid reliable and that is what matters when protecting and storing your data. And there is no thermal throttling with even the most power and heat intensive drives out there.
I am glad reliability is your number one concern. It is mine too. I accept the trade off made with regard to TB3 to ensure reliability. I could see that your thermal design looked superior and that is one of the reasons I bought it. It is performing very well indeed. Nice to see a post from OWC to clear up the mystery. I will be buying more of them.
 
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Does your OWC 1M2's LED stay on when your Mac mini sleeps?

When my M4 Mac mini sleeps, my Qwiizlab's green LED stays on, indicating it's still connected at 40 Gbps USB 4. However, the drive must be in sleep mode because given time, the SSD's temperature will drop to below 30C. The Qwiizlab's LED only goes off when the Mac mini has been shut down.
I am incorrect.

Actually, when the Mac mini first goes to sleep, the LED remains on. The power draw when the LED is on is 4.5 Watts or 5.6 Watts, I suspect because the power tester is not very precise, measuring 0.9 to 1.1 amps x 5.1 volts. However, after waiting a little while, the LED goes off, and it draws 0.2 to 0.3 amps, or 1.0 to 1.5 Watts.

Idle: 4.5-5.6 Watts (LED on)
Sleep: 1.0-1.5 Watts (LED off)

IOW, there is still a little power draw, which I guess explains why after many hours sleeping, the SSD temperature is not room temperature.

BTW, the good news is since I've had this enclosure, it's never lost the connection during sleep. With my M1 and other drives (T-series SSDs and portable hard drive), I'd occasionally get a warning message that the external drive was unsafely disconnected.
 
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I'm purchasing a Mac Mini M4. I have already purchased the Samsung 990 Pro 4TB SSD. Has anyone experienced any heat issues when pairing the 990 Pro with the OWC 1M2? I'm considering the OWC or the Acasis TBU405 with the fan switch?

I do not do heavy gaming, but would like to play a few games in the future. Mostly productivity, web work and smaller videos.

I am using a 1M2 with a 4TB Samsung 990 Pro - have used it with FCPX etc - no issues at all.

 
I am incorrect.

Actually, when the Mac mini first goes to sleep, the LED remains on. The power draw when the LED is on is 4.5 Watts or 5.6 Watts, I suspect because the power tester is not very precise, measuring 0.9 to 1.1 amps x 5.1 volts. However, after waiting a little while, the LED goes off, and it draws 0.2 to 0.3 amps, or 1.0 to 1.5 Watts.

Idle: 4.5-5.6 Watts (LED on)
Sleep: 1.0-1.5 Watts (LED off)

IOW, there is still a little power draw, which I guess explains why after many hours sleeping, the SSD temperature is not room temperature.

BTW, the good news is since I've had this enclosure, it's never lost the connection during sleep. With my M1 and other drives (T-series SSDs and portable hard drive), I'd occasionally get a warning message that the external drive was unsafely disconnected.
Thank you for this info. The power state and consumption when in sleep mode is exactly what I’ve been researching. I’m purchasing the OWC 1M2. I don’t see the need for TB4 support for my use case.
 
As you can probably see from the attached, I also favor the 1M2. They just work - in fact they are my main drives now. I rarely even use my Thunderblades for anything other then archiving since the 1M2's arrived.

2 of the 1M2 drives came prepopulated with 8TB drives.
I put a 4TB Samsung 990 Pro in the last.

All have worked flawlessly. All my systems have TB4/USB4 compatibility so never noticed any issues with TB3 etc at all.....
I rarely leave drives attached when not in use, or when placing my laptop to sleep - I generally always disconnect them when I have finished using them....that may change when/if I decide to replace my laptop with a Mac Mini...

Saying that, I do have a Qwizzlab drive on the way as well. Not that I need it - just wanted to try one out! lol
 

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Thank you for this info. The power state and consumption when in sleep mode is exactly what I’ve been researching. I’m purchasing the OWC 1M2. I don’t see the need for TB4 support for my use case.
Just to be clear, mine is not the OWC 1M2. It’s the Qwiizlab. And yeah I don’t specifically need TB4 either.

On another note, I’ve taken to labeling my cables now. My USB 4 and USB 3 cables look exactly the same but the USB 3 cables don’t work at USB 4 speeds. It’s really frustrating that there is no way to tell.
 
It’s really frustrating that there is no way to tell.
Good cables should have the specs labeled on them. At least on ours, we label both the speed and wattage rating. Too bad others don't always do that :(
 
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The Colorii, Hagibis, and Qwiizlab all use the same chassis and the same ASM2464PD chip. Like your OWC 1M2, Qwiizlab specifically states 8 TB drives are supported, but for some reason, both Colorii and Hagibis state that the maximum drive size is 4 TB. I was a little surprised by this considering it uses the same chipset so I asked Hagibis support, and they confirmed the 4 TB maximum. I'm still not 100% sure if that is accurate though.

The Colorii / Hagibis / Qwiizlab place the status LED on the same end as the USB-C port, which is inconvenient for desktop users. The status LED is two-colour, white for USB 3 connections, and green for USB 4 connections. The OWC 1M2 has the status LED on the opposite end to the USB-C port. The Colorii / Hagibis / Qwiizlab is grey in colour. The OWC 1M2 is the same silver aluminum colour as the Mac mini and the Apple Studio Display.
 
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Does your OWC 1M2's LED stay on when your Mac mini sleeps?
No. It goes off.

[update]. I am afraid I have to countermand this. The light has come back on. It appears that Mac OS sleep mode continues to not work. Even so it only consumes 36 watts so not much to worry about; still, it would be nice if sleep mode were reliable.
 
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No. It goes off.
I am afraid I have to countermand this. The light has come back on. It appears that Mac OS sleep mode continues to not work. Even so it only consumes 36 watts so not much to worry about; still, it would be nice if sleep mode were reliable.
 
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