This is where I hesitate a bit. My CSE-825 is a 3U chassis, and included the MCP-290-00053-0N rail set. I took those off and the MCP-290-00058-0N mounted in their place; they’re just not as long, so you end up not using the snap on hook things in the very back. The screw holes lined up just the same.
So, I think it SHOULD work, but at nearly $100 I hesitate to say they will. I’d make sure you can return them just in case.
I still haven’t bought the HL15, but I have a Supermicro CSE-835 that uses these rails.
It came with the 00053s that 45Drives distributes with the HL15. These are full depth. The 00058s work exactly the same way. They’re just shorter.
both the '53s and the '58s used the exact same mount points and mounted the exact same way on my CSE-835, with the exception that the '58s don’t use the mounting clips all the way at the back of the server. They’re not long enough. They’re easily 3/4s the depth of the CSE-835 and attach VERY securely.
The larger of the two brackets mounts to the back of the HL15 on the bottom right side of the chassis if you’re looking at it from the back. The other, smaller bracket mounts to the rack.
Note that Supermicro assumes the mounting point of the larger bracket is in line with the rails themselves. On the HL15, the rails sit above the bracket mount. This means that the smaller bracket, which is intended to screw into the rear of the rail where it meets the rack, does not line up. You’ll need to mount the smaller bracket just below the rear of the rail.
Here’s a quick shot from above to show how it’s mounted.
HI @gh0stee, I will talk to the team to see if we can get a supplier lined up for this and how we want to handle this. We sell the longer rails because that’s what we use on our larger enterprise servers but I’ll get the team to look into it.