SupermicroAOC-SLG3-2M2 PCIe Add-On Card for up to Two NVMe SSDs

Slots are far enough apart to support two drives with large heat sinks. Of course you will only see one drive if your bios/motherboard does not support bifurcation.Works perfectly on my Supermicro X11DPi MB's with two WD_BLACK 8TB SN850P M.2 with heatsinks - WDBBYV0080BNC-WRSN. OS: VMware ESXI 8.03.

Works well in my computer with a Supermicro X12SPi-TF motherboard. It is running with two drives in it without problems. I did not have to do anything in BIOS to set lane splitting for it to work properly. All-in-all a solid product that performs without problems for me.

Allowed me to install two sticks into a Dell R630 rack server, and still working good months later.

Works great on my dell r630 for adding M.3 ssd inside the server. It adds 2 ports

Installed in Dell Precision T5810 workstation in x8 lane with Intel 1TB SSDs. BIOS is set to "Legacy" mode, and surprised that it will still boot from Socket-1. Drive in Socket-2 is accessible, but it cannot be selected for boot even though visible in BIOS and temporary boot-selection menu ("F12").I also had ordered the ASUS Hyper M.2 X16 PCIe 3.0 X4 Expansion Card V2. Under same BIOS "Legacy" settings, it will only boot from Socket-4, but other Sockets 1,2 & 3 drives are all visible.I think the ASUS Hyper M.2 is a better value in my case as it is used to triple boot: Centos-7 (Socket-4) and "grub2" allowing me to get to Windows-10 (Socket-3), Centos-8 (Socket-2). Socket-1 is just used as an NTFS backup disk.Have not tried UEFI BIOS setting for either case.

If you have a board that supports bifurcation, it might still not work regardless of any settings you choose in BIOS. I tried it on several non-server boards, like Asrock, Asus, MSI, etc. and it will not pick it up where other 2-4x NVME cards do show up.I suspect you need a server board with a specific set of components for it to work, or the jumpers need to be tweaked. I wasn't brave enough to mess with the jumpers, all my MBs are too expensive to risk it on a cheap card.

In my case, it was not listed as compatible with my SuperMicro System Board. I would get PCI events/alerts from the IPMI whenever I put the system under load where the NVMe sticks would be hit, however, it worked and the underlying OS (FreeNAS) never complained. Ended up pulling it as I didn't like the alerts. Mainly wanted this solution as I could look at using 110mm Optane sticks for the ZIL as the onboard NVMe M.2 slot is only up to 80mm; and I've yet to locate a M.2 NVMe that size that supports power-loss-protection; which given the nature of a ZIL; is pretty important.Marking it 4 stars because it worked, but, knocking 1 star because something like this should just simply work w/o generating alerts and if the system supports bifurcation (mine does) then it should just work. Probably works find in systems that SM says it's supported for; and of note, SM Support was willing to help troubleshoot.

If you are using a supported SuperMicro Motherboard, this card is amazing.The only difficult part is getting the correct PCIe bus set to 4x4x4x4x bifurcation.You will likely need your motherboard's manual and a little bit of help from SuperMicro's documentation.SM BIOS are notoriously complex beasts -- mine is a dual processor scalable Xeon board and the setting is down 6 levels into the Advanced menu, and I had to know the correct CPU and PCIe lane to configure. I figured that out from looking at the Mobo's physical layout diagram.EDIT: What an absolute beast. I've been running two of these at high temps and heavy (heavy) loads for a couple of years now. Solid.