The boards between the motherboard and everything else — risers, backplanes, expanders, and interposers, matched by part number.
Browse 978 products in Boards & Risers.
Between the system board and the parts you actually notice sits a layer of platform-specific boards: PCIe risers that present expansion slots at the right height and lane count, drive backplanes that connect hot-swap bays to the storage controller, SAS expanders that multiply controller ports across large bays, and interposers that adapt drive interfaces. When one fails — or when a configuration upgrade needs a variant the chassis didn't ship with — only the exact board fits.
These parts are ordered almost exclusively by part number, and that is how we stock them: risers by slot layout and generation, backplanes by bay count and form factor, for the major Dell, HPE, Lenovo, and Supermicro platforms. Send the part number from the failed board or your service tag and we will match it, along with any cables the swap requires.
A group of drives disappearing together points at the backplane or its cabling rather than the drives. Send your server model and drive-bay layout and we will identify the backplane part number.
Rarely — risers are keyed to the chassis, board connector, and PCIe generation. Match the exact part number or let us resolve it from your service tag.
A small adapter board that sits between a drive and the backplane to bridge interfaces or enable features (for example, dual-port access to SATA drives in some arrays). They are platform-specific like other boards.