StarTech.com Dual M.2 SATA Adapter with RAID - 2x M.2 SSDs to 2.5in SATA (6Gbps) RAID Adapter Converter with TRIM Support , TAA (25S22M2NGFFR)

I am using 2x2TB WD Blue SATA devices set to Raid 0. Bios sees 4TB disk with the raid controller as the device name. Everything seems to work except TRIM. With discard in /etc/fstab the kernel log spams "DATA_SET_MANAGEMENT" errors, basically saying TRIM is not supported. I do not suspect this controller though, I am using an N5105 router mini pc from aliexpress with an elmer's glued-together bios. After removing discard from my fstab the device is working perfectly fine. I expect TRIM to work fine on a regular computer. If you have an aliexpress frankenstein machine, expect TRIM to not work. The case is great quality which is the main reason I got this. I figured I'd have some kind of issue and the lack of TRIM is acceptable for me.

RAID switches worked seamlessly when testing on my computer. I used this to combine a 2TB m.2 & 1TB m.2, for a total of 3TB, to use as my Xbox One X internal drive and it works flawlessly.

I love the idea of this drive carrier. I had hoped to consolidate 2xSSD drives I had in a RAID1 pool into one bay and free that bay for use. In my head I had thought with the m.2 drives that the speed would be great, probably better then the SSD's I had before. Not so much. The reality is the SATA interface is your speed limiter, even if your drives are faster, the IO to the drive is still very limited. The RAID HW in this does not slow the drive down any, and it provides a nice flat speed curve and nearly the rated spec for SATA Gen2. So it does what it should.It's not what I thought it would be, but now that I've thought about it, it's what it should be. So just be careful.Also, nvme/m.2 drives tend to get hot. Two of them in a nearly sealed space is going to consequently run hot. There are not heatinks nor space for them here. So on average these are running at 105F idle when the others in my system run about 73F.I'd say great idea StarTech. I'm not upset with it. I'll probably still let it run (assuming it doesn't throw heat problems under load). It did what I thought I wanted, so there is a niche. But if i had to do it again i'm not sure I would have bothered with the cost for limited gain in my instance.

This item works great just remember after you load the drives in you need to reformat them to work and set dip switch on correct settings which is in the manual.

1. Placed Samsung NVME 980 PRO 2TB in the adapter.2. Verified that JBOD is selected with the onboard switches.3. Powered ON through two different SATA-to-USB enclosures that have separarate power outlets.Drive gave an error. Both LEDS are constantly ON, Windows says "DRIVE IO ERROR".Removed the NVME and placed in a computer.Drive worked well: formatted, placed data, maintained speed. Its not the drive!Placed again in adapter, repeated JBOD and RESET.Drive again DRIVE IO ERROR and both LEDS are constantly ON.Conclusion: Crap. Stay away from this overpriced and nonworking product!!!

Had four 2565GB B&M's. Got two of these enclosures. Set them as JBOD. Configured the now 512GB as stripe. Baam! 1TB SSD. Smokin'! No seriously, they were running a tad hotter than I liked. So I pulled the metal cover off, leaving the SSDs exposed for direct air cooling. That resolved the heating issue. Now they run at an acceptable 41 C. However, the PCB is only attached to the frame with plastic pegs that aren't tight enough. They're secured, as long as there's no movement. Still 5 stars.

Didn't work with my motherboard. Wasted hours trying to troubleshoot this just to find that my motherboard doesn't have multiport on the SATA connection I was using, so I can't use both drives independently, making this functionally a waste. I was forced to use the SPAN setting to treat both of my m.2 drives as a single drive. Would have been better to just buy a SATA SSD and not use m.2.If you're not sure if you have multiport, just stay away.

Raid 0-probably the one you want, combines both ssds and stripes the data(good thing for speed)Jbod-" just a bunch of drives" shows both drives, slower but some might prefer if you need to swap drives around (probably don't though)Other raid settings are good for data backup but ime ssds are pretty good without backing up. That said sensitive info and documents I would probably use something else to back up data. Not to knock this but anyone needing a lot of backup would have a bigger raid setup given this is just 2 drives.