This M.2 NVMe PCIe x4 Low Profile Adapter is very small in size and can fit into a 1U rackmount vertically. It is only 130x31x10mm in size and when seated in the PCIe slot it only stands up by 23mm. With the small size, it is capable of holding the longest (110mm) M.2 NVMe available. It comes with Heat Sink and Heat Pad for Thermal Management. This adapter will also support other shorter NVMe length like 80, 60, 42, 30mm in length. With this adapter, your NVMe is linked to the PCIe x4 lanes using PCI Express v4.0/v3.0 specifications for super-fast booting or data access. This M.2 NVMe adapter will give you the best performance possible for your system.