Supermicro CBL-MCIO-1245U2Y-E MCIO x8 a 2x SFF-8639/U.2+Pwr 45cm G5 RoHS - Cable

High-density NVMe storage deployments demand a reliable, high-speed link between host controllers and U.2 SSDs. The Supermicro CBL-MCIO-1245U2Y-E answers that need with a purpose-built internal cable that converts a single MCIO x8 connector into two SFF-8639 U.2 ports with integrated power—no separate power leads, no clutter, just clean, efficient connectivity.

Who is it for

System integrators, data center technicians, and IT professionals building or upgrading servers and storage enclosures that use PCIe Gen 5 NVMe U.2 drives. This cable is ideal for compact, high-performance environments where airflow and cable management are critical.

Main features

• Connects 1x MCIO x8 host interface to 2x SFF-8639 U.2 NVMe SSDs with integrated power delivery.
• Supports PCIe Gen 5 signaling up to 32 GT/s per lane for maximum throughput.
• 45 cm length provides flexibility in rack-mount chassis without excess slack.
• Fully shielded copper conductors ensure signal integrity and reduce EMI.
• RoHS compliant construction meets environmental standards.

Specifications

• Brand: Supermicro
• Model: CBL-MCIO-1245U2Y-E
• Connector A: 1x MCIO x8 (Mini-Cooler Interconnect)
• Connector B: 2x SFF-8639 (U.2) with integrated power
• Cable length: 45 cm (0.45 m)
• PCIe generation: Gen 5 (32 GT/s per lane)
• Interface standard: NVMe over PCIe
• Conductor material: Copper
• Shielding: Yes
• Compliance: RoHS
• Application: Internal server/storage connectivity

Tips

Before installation, verify that your motherboard or HBA has an available MCIO x8 port and that your chassis supports U.2 drive bays. Route the cable away from sharp edges and high-temperature components to preserve signal quality over time.