frontpageWeiW8847 posted Nov 26, 2025 06:00 AM
Item 1 of 2
Item 1 of 2
frontpageWeiW8847 posted Nov 26, 2025 06:00 AM
OWC Express 1M2 USB4 NVMe M.2 External SSD Enclosure
+ Free Shipping$80
$120
33% offAmazon
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Early FireWire and USB drives also got their limits pushed on Mac but that wasn't Apple's fault.
Apple co-developed Thunderbolt and USB-C, which led to USB4 merging both.
Here's a good blog describing the chipsets
https://dancharblog.wor
Here's a link to the ASM2464PD firmware - if you already have any enclosure with this chipset, you can update and fix disconnect issues if you're having them.
https://www.station-drivers.com/i...ang,en-gb/
Here's a link to an enclosure with the same ASM2464PD chipset for half the price - 40Gbps
https://a.co/d/4uIMNrb
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i was thinking the same thing but I guess because it's usb4, probably has a top class chipset, and seems to be quite adequately cooled.
maybe also sprinkle in a little bit of brand tax too. OWC seems to be a fan favorite in the Mac community.
https://slickdeals.net/f/18875407-owc-express-1m2-40gb-s-portable-nvme-ssd-usb4-thunderbolt-compatible-usb-c-ultra-fast-external-ssd-drive-with-aluminum-heat-sink-enclosure-enclosure-only-for-79-99?p=180564688&
Here's a good blog describing the chipsets
https://dancharblog.wor
Here's a link to the ASM2464PD firmware - if you already have any enclosure with this chipset, you can update and fix disconnect issues if you're having them.
https://www.station-drivers.com/i...ang,en-gb/
Here's a link to an enclosure with the same ASM2464PD chipset for half the price - 40Gbps
https://a.co/d/4uIMNrb
https://www.amazon.com/UGREEN-Dou...B0F62NG7K
Sign up for a Slickdeals account to remove this ad.
I have this 1M2 and it is rock solid 24/7 with the WD850x and runs cool.
Personally, I believe this one is an exception. It has much more thermal mass, and surface area than most enclosures, most MacProfessionals are limited to external drives, and OWC specializes in marketing to that userbase.
[IMG]https://m.media-amazon.com/images/I/71TtoaaTAML._AC_SL1500_.jpg[/IMG]
This is much more expensive than most NVMe enclosures but, you do get something for that price increase.
*Most 'cheapie' NVMe enclosures can be modified for long-term operation.
'Thermal Putty' or 'Thermal Pads' must be added between the (usually Realtek) USB-NVMe bridge chip and the metal drive enclosure.
Do note though: If your given NVMe drive cannot dissipate its heat, the entire enclosure will (eventually) reach unsafe operating temperatures in long/large continuous read-write operations.
https://www.amazon.com/dp/B07GKFH...dp_it
To plug into my 4K player to load with kid cartoons instead of usb sticks, if you catch my drift matey!
Does anyone have any recommendations for this task?
https://www.amazon.com/UGREEN-Dou...B0F62NG7K
Here's one even cheaper without a fan. Same ASM2464pd chipset with updatable firmware.
https://a.co/d/19cu3uS
Unless OWC is writing their own firmware for ASM2464 chipset, all these enclosures perform the same.
Here's one even cheaper without a fan. Same ASM2464pd chipset with updatable firmware.
https://a.co/d/19cu3uS
Unless OWC is writing their own firmware for ASM2464 chipset, all these enclosures perform the same.
Been very happy with the OWC for many months now, and it runs 24/7 connected to an M4 Pro Mac mini.
Or it could be a poor/bad chipset. Lot of discussion on that.
Bottom line, it's not the Mac. It's that you are using bleeding edge PCIe Cable I/O in the latest USB standard. One panic per month is considered minimal, especially historically.
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