B550M DS3H Key Features Motherboard

is a solid-state drive form factor primarily used as an operating system boot solution Lenovo ThinkSystem servers support drives either with

2x Internal with optional RAID; 8x Onboard NVMe ports; NVMe Retimer Front-accessible slots available; More PCIe connections for greater PCIeNVMe support

2xl slot 2 PCIe x4 slot on your motherboard By creating compatibility with newer NVMe SSDs, such as the Intel® SSD 750 series, this enterprise-class drive adapter

2xbet slot There is really no way to alter the PCIe lane assignments There is nothing in the Service Manual indicating if the slot is an x2 or an x4