[SOLVED] NVME requires external power adapter

[railgadi]

Hi,

I have a Samsung nvme m2 ((PCIe 4 M.2 2280 ). When I use it inside of a nvme enclosure, it doesn't show up on my mac or pc. However when I use a powered nvme cloner, it shows up on both the devices. I tried a different one (same model) it gets detected on the Mac and PC without an external power adapter.

What could be cause for this?

TIA

 

[Eximo]

Check the required power of the drive you are trying to run, my guess would be it is higher than the enclosure supports through its USB connection.

 

[railgadi]

Agreed, but why is the same model new piece is getting recognized in the same enclosure?

 

[Eximo]

Not sure I could have guessed that from what you wrote. Are you saying you have multiple of the same drive, or more than one of the same enclosure?

Exact model of everything would be somewhat helpful in answering.

Could be as simple as the USB ports you are plugging into offer more power.

 

[railgadi]

Samsung 970 EVO | Consumer SSD | Specs & Features | Samsung Semiconductor Global

Samsung 970 EVO delivers PCIe® Gen3 NVMe, M.2, and capacities ranging from 250GB to 2TB. Download 970 EVO firmware, driver, and more.

www.samsung.com

This is the one that's not getting recognized
AVERAGE POWER CONSUMPTION -- 500GB: Average 5.7 W Maximum 10.0 W

Samsung 970 EVO Plus PCIe 3.0 SSD | Samsung Semiconductor Global

Samsung 970 EVO Plus maximizes the potential of NVMe™ bandwidth for unbeatable computing. In capacities up to 2TB, with reliability of up to 1,200 TBW.

www.samsung.com

This is the one that's getting recognized
AVERAGE POWER CONSUMPTION -- 500GB: Average 5.8 W

 

[Eximo]

This might be the case of the enclosure needing a firmware update. Check with the manufacturer.