There are many motherboards that have more NVMe slots than others. Some of the more popular motherboards with NVMe slots include the ASUS ROG Zephyrus M GM501, the ASRock Z270M Pro4, and the MSI X299A Gaming Pro Carbon.
These boards have a total of 11 NVMe slots, which is more than any other motherboard on the market. While there are other boards that have a few NVMe slots, they do not have a total of 11.
Some people might not care about having a lot of NVMe slots because they only use a small number of NVMe SSDs. Others might want to buy a board with more NVMe slots because they plan on using a lot of SSDs.
It is important to consider what you plan on using your board for before making a purchase. There are many different types of NVMe SSDs, so it is important to find the right motherboard for your needs.