The Supermicro RR1U-E8 is a passive 1U riser card designed for standard server environments that require horizontal expansion in low-profile 1U chassis. It provides a single PCI Express 3.0 x8 slot on the left-hand side (LHS), ensuring stable connectivity for compatible PCIe x8 expansion cards.
The riser operates passively, meaning it does not introduce additional active components between the motherboard and the expansion card. This helps maintain signal integrity and reduces potential failure points in high-availability server configurations.
This riser is intended for use in systems where a single PCIe x8 expansion card is required in a 1U enclosure, such as network adapters or other compatible PCIe devices, provided they do not rely on GPU, NVMe or M.2 functionality. Its passive construction and automatic detection capability make it suitable for technically oriented deployments where reliability and predictable integration with the server platform are critical.