CBL-MCIO-1245M5R Supermicro 45cm Cable

High-Integrity Internal PCIe Interconnect Cable for NVMe Signal Routing with the CBL-MCIO-1245M5R

The CBL-MCIO-1245M5R is a Supermicro internal MCIO x8 to MCIO x8 PCIe cable engineered for clean 8-lane signal continuity between motherboard and PCIe/NVMe backplanes in dense storage and GPU-capable platforms. In architectures where CPU PCIe lane budgets are tightly allocated and cabling paths must remain serviceable, the CBL-MCIO-1245M5R supports deterministic routing without forcing board-level redesign.

Designed for modern PCIe Gen4/Gen5-class server topologies, the CBL-MCIO-1245M5R enables short internal interconnect runs that preserve link integrity across chassis partitions, helping maintain stable enumeration and predictable bandwidth to NVMe drive bays and downstream expander-free backplanes. Its 45cm length supports common 1U/2U cable paths, while the right-angle to straight connector orientation improves bend radius management and reduces stress at the header interface during maintenance cycles.

Why Choose the CBL-MCIO-1245M5R?

The CBL-MCIO-1245M5R is selected to standardise internal PCIe lane transport where uptime, repeatable deployment, and consistent service replacement matter. It supports high-density storage nodes by enabling efficient motherboard-to-backplane connectivity, reducing integration risk during platform scaling and ensuring field-service alignment with Supermicro reference cabling layouts.

Supermicro engineers its internal interconnect ecosystem with a focus on system-level reliability, validated component fit, and compatibility with current data centre chassis standards. This approach helps ensure the CBL-MCIO-1245M5R integrates cleanly into qualified server and storage configurations with predictable mechanical and electrical behaviour.

Key Applications:

• PCIe/NVMe backplane-to-motherboard internal cabling
• Storage server PCIe lane breakout and extension
• Service replacement for Supermicro server platforms
• High-density NVMe storage node integration

At Happyware - Server Hardware you benefit from non-binding offers tailored to your deployment and a bulk order discount for standardising the CBL-MCIO-1245M5R across multiple systems or spares kits.