ASUS Hyper M.2 x16 Gen5 Card (PCIe 5.0/4.0) Supports Four NVMe M.2 (2242/2260/2280/22110) Devices up to 512 Gbps for AMD and Intel® Platform RAID Functions.

Well, if you need to add 4 M.2 drives to your PC, this is just about the only way but… it has an ANNOYING fan and has no temperature sensors so it will simply spin for no reason no matter what you do with the POS Armory Crate that Asus makes. I found a 3rd party fan controller and have permanently set it to 30% fan and it’s decently quiet. Have yet to see drives throttle (have 4x4tb gen 5 SSDs inside) so it’s an inelegant solution. It DOES have a tiny switch at the back that can turn the fan off/on which you can do if it really peeves you - or if you choose alternate cooling methods.

Its a great little product. Easy to install, just make sure your computer support PCIe Bifurcation. I was able to install the NVME drives in the board and install the board in the computer in less time than it took me enable the PCIe Bifurcation in my Bios. Yeah, this board works great, its really fast and simple to use. Its a real bargain at this price.

It is an expansion card for RAID configuration with M.2 SSD, but it cannot be handled satisfactorily without HEDT system as a prerequisite. This product supports PCIe 5.0, but I have tested it with PCIe 4.0 because I have not found a satisfactory drive yet. As a precaution, make sure that your motherboard has PCIe slot branching and is properly set. Otherwise, only one of the M.2_1 drives will be recognized. I will give you just one image, but the transfer speed seems to have a wall around 20GB/s, so you will have to work hard to get the performance out of it. Alternatively, the Sapphire Rapids platform itself still seems immature, so it depends on the BIOS of the motherboard. By the way, I used products Xeon w5-2455X + Pro WS W790E-SAGE SE + VROC Key Standard and SSD: EXCERIA PRO NVMe SSD-CK2.0N4P *4.

this is soo much better than the 1 slot card that came with my MoBo that only had 1 slot and not fan cooled. so far ive had no speed issues(gen 4's till the 5's come down in price a bit) this has been a dream with no thermal issues or speed so im very happy. im upto 14 mixed drives in my Photo Editing machine.

FIRST:> Your motherboard must support Bifurcation or splitting of a single PCI-Express slot into multiple lanes. The ONLY boards that support 4-way bifurcation, which would be necessary to use all 4 slots, are server boards that utilize an X299 or newer server chipset, & mostly run on Xeon processors unless you're okay with 4 generation old (X299 support Intel Core CPU's up to 10th gen) system.... I eventually plan to upgrade to a W790 based workstation PC which does support all-4 slots but those boards by themselves cost more than my top end i9-13900KS, motherboard, & 64GB of RAM combined. Unfortunately, I cannot reuse the RAM (DDR4) on any W790 board I've found. SECONDLY:> Are you wanting to add additional drive space, or just run a RAID array? If the latter, make sure your motherboard doesn't natively support RAID first, more than half of the models available do support RAID these days. A large portion of those that do not, also do not support bifurcation and you would only be able to use 1 slot out of the 4... Intel has no plans (at least not in their current pipeline) to increase the number of PCI-E lanes supported in consumer CPU's which would also be necessary for a home PC to support all 4 slots. So in the end, this ends up being a somewhat expensive way to add one or two M.2 slots to your PC. Even without a GPU most home boards only support 2 slots, though there are a few older chipsets that support 3 slots if you're not using an add-in GPU. Operation wise, this runs like a champ. I had a brief opportunity to run two Gen5 nvme drives in RAID on this card, & they were phenomenal, even on my Gen4 PCI-E slot. Only real reason for 3 stars instead of 5 is the extreme lack of motherboard support to run 4 slots. As such, there should be a 2 slot version of the card for the normal home users, along side the 4-slot card for server/workstation users.