‌PCIe 16X 164 Pin to 1 X MCIO 74P Cable 200mm with 100mm Power

‌Technical Description

The PCIe x16 164-pin to 1 x MCIO 74P cable is a high-speed internal interconnect assembly designed to route PCI Express signals from a standard PCIe CEM/AIC x16 goldfinger interface (164 pins) to a compact MCIO 74-pin connector used in servers, storage platforms, and high-density compute systems. Industry references identify the 164-pin side as the standard PCIe x16 add-in-card edge connection, while MCIO 74P corresponds to the SFF-TA-1016 Mini Cool Edge I/O x8 form factor, commonly used for high-speed PCIe, SAS, and related server interconnects.

This cable is intended for applications where PCIe lanes from a host adapter, riser, backplane, or accelerator need to be extended or adapted to an MCIO-based device interface in a compact chassis. MCIO is a high-density connector family developed for board-to-cable and board-to-board interconnects in server and storage environments, supporting 85-ohm differential signaling and designed for performance levels associated with PCIe Gen5, with some ecosystems positioning the format for a migration path toward PCIe Gen6.

The 200mm cable length indicates a short-reach internal assembly optimized for controlled impedance, low insertion loss, and improved signal integrity inside dense systems. The added 100mm power lead typically provides auxiliary power breakout for devices or adapter logic that cannot rely solely on slot-delivered power, though the exact voltage and connector style are vendor-specific and should be verified against the product drawing or BOM. I could confirm the presence of auxiliary power in similar PCIe-to-MCIO adapter products, but not the exact pinout for your specific cable from the wording alone.

Interface details

• Host side: PCIe x16 CEM/AIC edge connector, 164-pin

• Device side: 1 x MCIO 74P connector

• MCIO format: 74 contacts, 0.6 mm pitch connector family

• Typical signaling use: PCIe / high-speed differential lanes, sideband management, and platform-specific control signals

• Nominal impedance ecosystem: 85 Ω differential for PCIe-class signaling

Typical use cases

• PCIe host card to MCIO backplane connection

• Server/storage riser and expansion architectures

• GPU, NVMe, accelerator, or switch fabrics using MCIO-based internal cabling

• HPC, AI server, and enterprise storage systems where dense, short-reach internal PCIe cabling is required