ASUS Pro WS C621-E V2.0

The firmware interface used by a computer system to initialize hardware and load the operating system, such as UEFI or legacy BIOS. It indicates whether the motherboard supports modern features like secure boot, fast startup, or compatibility with older operating systems.

List of processor families that the product can support, such as Intel Celeron, Intel Core i5, AMD Ryzen 3, etc. Each value represents a distinct CPU family or brand that is compatible with the hardware platform.

The total count of M.2 expansion slots available on a device or motherboard. It indicates how many separate M.2 connectors can be used to install SSDs, NVMe drives, Wi‑Fi cards, or other compatible modules.

The count of expansion slots on a device that support the PCI Express interface with a configuration of 16 lanes (x16) and are compliant with the Generation 3.x specification. This value indicates how many high‑bandwidth devices, such as graphics cards or other x16 peripherals, can be installed simultaneously.

Indicates whether the product includes a dedicated power connector for its cooling fan(s). A value of "Yes" means the device has a separate electrical connection that supplies power to one or more fans, while "No" indicates that fan power is supplied through another interface (e.g., motherboard header) or not present.

A list of memory module sizes that the product can support, expressed as data sizes such as megabytes or gigabytes. Each value represents a single capacity option; multiple options are separated by commas.

A list of the memory module types that a device can accept or support, such as DDR4 SDRAM, LPDDR3, or other RAM technologies. Each entry represents a distinct memory architecture or generation compatible with the product.

A list of the memory clock frequencies, expressed in megahertz (MHz), that a registered DIMM (RDIMM) can operate at. Each value represents an individual supported speed; multiple speeds are separated by commas. This attribute helps users determine which RDIMMs are compatible with a given motherboard or server.