@mad-jester One issue we're seeing is that the product ID shown in programs like USB Device Tree Viewer seems to be incorrect and it may be properly identified with a firmware update. We began test...

@Jeff morris I'm confused as to why each drive has the exact same partition layout. I am not sure what your intention is with these drives and if there is any data on them. If the drives are clear ...

@ted.lillys We tested a unit in the office and it also defaults to the B port. The power port provides the standard 900mA at 5V.

Care to elaborate on the additional testing?

Thank you for the answers! "This model" - do you mean EC-UASP or DS-4SSD? A firmware update can't bring TRIM support into JMS561U, right? At which capacity should I be worried about the limitation...

Appreciate the response. Unfortuantely the 3721.42GB partition is not allowing me to right-click and assign a drive. Everything is grayed out with no formatting available nor assigning a drive, so ...

@mad-jester I will investigate this, thank you. Edit: None of our DS-4SSDs were shipped with a JMS561U. 

@mad-jester The EC-UASP can use multiple chipsets such as the JMS578 and ASM1053E. These do support UASP and TRIM. If you have any issues with capacity, as may be the case, a firmware update from t...

@Jeff morris Partitions don't have drive letters by default, you have to assign them. Each of four drives has a 3721.42GB partition which could be right-clicked for assignment, if that is your goal.

Unfortunately, I will be sending this back if I am not able to get the pathway corrected so the drives will work. Hope to hear from you today!

@Rick Raborn I was looking at some specs and noticed this enclosure had an update so was looking for a changelog and found this post. What staff should have told you is that the bronze thing is a s...

Reading about Sabrent products on the Internet, seems like I have to also ask questions that I would assume should not have to be asked: - What is the maximum supported device capacity? - Does it...

Oh, it's also JMS561U, isn't it... At least for those who actually bought it. https://forum.odroid.com/viewtopic.php?p=304941

Hello, Could you provide more information about this product? https://sabrent.com/collections/enclosures/products/ec-uasp - Which chipset does it use? I've bought a DS-4SSD and found out it is in...

No, the DS-4SSD is NOT JMS567+JMB575. It's JMS561U, which is by the way unsuitable for SSDs because it does NOT support TRIM/DISCARD, it does NOT support hot-swap or even hot-plug, and has all kind...

snippet of disk management which I believe shows them as unallocated? 

@Sabrent I am a bit unfamiliar with doing that, so can you tell em how? Thx

@Jeff morris Make sure the drives are not allocated to Windows Storage Spaces. Then you can prepare the drives in Disk Management.

I have loaded all 4 bays with drives and my system is not seeing it. I switched the docking station to a laptop and it does not see it either?

Sabrent- Just plugged in my 4Bay 3.5 HD Docking station and it is not appearing in my registry? Drive is in, powered up great, connected to desktop properly but nothing. The light is blue and the f...