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Alt view image 2 of 7 - LetLinkSo PCIe 5.0 MCIO x8(SFF-TA-1016 74Pin) to Dual MCIO x4 Breakout Cable, Male-to-Male, 50cm Length, PCIe5.0 & SAS4.0 Compliant for Server & Data Center

Alt view image 3 of 7 - LetLinkSo PCIe 5.0 MCIO x8(SFF-TA-1016 74Pin) to Dual MCIO x4 Breakout Cable, Male-to-Male, 50cm Length, PCIe5.0 & SAS4.0 Compliant for Server & Data Center

Alt view image 4 of 7 - LetLinkSo PCIe 5.0 MCIO x8(SFF-TA-1016 74Pin) to Dual MCIO x4 Breakout Cable, Male-to-Male, 50cm Length, PCIe5.0 & SAS4.0 Compliant for Server & Data Center

Alt view image 5 of 7 - LetLinkSo PCIe 5.0 MCIO x8(SFF-TA-1016 74Pin) to Dual MCIO x4 Breakout Cable, Male-to-Male, 50cm Length, PCIe5.0 & SAS4.0 Compliant for Server & Data Center

Alt view image 6 of 7 - LetLinkSo PCIe 5.0 MCIO x8(SFF-TA-1016 74Pin) to Dual MCIO x4 Breakout Cable, Male-to-Male, 50cm Length, PCIe5.0 & SAS4.0 Compliant for Server & Data Center

Alt view image 7 of 7 - LetLinkSo PCIe 5.0 MCIO x8(SFF-TA-1016 74Pin) to Dual MCIO x4 Breakout Cable, Male-to-Male, 50cm Length, PCIe5.0 & SAS4.0 Compliant for Server & Data Center

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LetLinkSo PCIe 5.0 MCIO x8(SFF-TA-1016 74Pin) to Dual MCIO x4 Breakout Cable, Male-to-Male, 50cm Length, PCIe5.0 & SAS4.0 Compliant for Server & Data Center

Item #: 9SIVSXPKY41008
Mfr. Part #: LLS-CB-1MC2MC-01
UNSPSC: 26121604

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Single 74Pin MCIO x8 splits into dual 38Pin MCIO x4 ports, one-to-two breakout design flexibly expands server internal storage and accelerator connection resources.
Conforms to PCIe5.0 & SAS4.0 specs, single lane 32GT/s, total bandwidth up to256Gbps to satisfy high-performance computing big-data fast transmission.
Enterprise-level industrial standard, stable electrical performance for mission-critical 24/7 running equipment in data center rack environment.
0.6mm fine pin pitch compact connector structure saves cabinet inner space, ideal for high-density 1U/2U server layout optimization.
Optimized internal wiring reduces signal attenuation & crosstalk; factory bulk supply plus OEM/ODM customization for enterprise centralized procurement.

Overview

Specs

Reviews

Product Positioning & Applications

This enterprise-grade Y-type breakout cable converts single MCIO x8 into dual MCIO x4 interfaces, mainly deployed inside rack servers and high-performance workstations for expanding expansion card, storage module and CPU peripheral links, widely used on data center, HPC and industrial server projects.

Specifications & Compatibility

1x Connector A: Straight Male MCIO 8i(SFF-TA-1016 74Pin);2x Connector B: Straight Male MCIO4i(SFF-TA-1016 38Pin). PCIe5.0 & SAS4.0 certified,8 lanes,32GT/s per lane, max total 256Gbps bandwidth, backward compatible PCIe5.0~1.0, RoHS compliant, 50cm total length, indoor-only usage.

Construction & Performance Advantages

0.6mm small pin pitch mini MCIO connector saves server inner layout space; precision internal cabling suppresses signal crosstalk and loss to keep stable transmission under long-time full-load rack operation.

Installation & Usage Notes

Direct plug-and-play without drivers, connect MCIO x8 end to host mainboard/backplane, two x4 terminals to respective expansion devices to finish one-to-two resource expansion.

Package Contents & Enterprise Support

Package includes:1 x MCIO x8 to dual x4 breakout cable. Standard packaging, factory in-stock bulk delivery, customizable cable length & pin definition via OEM/ODM, all items with 12-month warranty for large-scale server project sourcing.

Product Specifications:

Connector A: Straight MCIO 8i (SFF-TA-1016 74 pin)

Connector B: Straight 2 x MCIO 4i (SFF-TA-1016 38 pin)

Data Transfer Rate: Up to 256 Gbps ( 32GT/s per lane)

Lanes: 8

Compliance Standards: SCSI (SAS), PCIe 5.0, 4.0, 3.0, 2.0, 1.0

Model
Brand	LetLinkSo
Type	PCIe 5.0 \ SAS 4.0
Type	74 Pin Mcio X8 to 2 X 64 Pin Mcio X4
Color	Black

Details
Length	1.6ft
Connector Number	3
Connector Detail	1×Straight Male MCIO8i(SFF-TA-1016 74Pin);2×Straight Male MCIO4i(SFF-TA-1016 38Pin)
Terminal Gender	Male to Male
Speed	256 Gigabits Per Second
Specifications	PCIe5.0 & SAS4.0 compliant,8 lanes,32GT/s per lane, total 256Gbps; backward compatible PCIe5.0/4.0/3.0/2.0/1.0; RoHS certified,50cm length

Standards
Shielding	Yes
Conductor	Copper Conductor
Construction	0.6mm compact pin pitch MCIO connector, precision internal wiring for low crosstalk & stable signal

Features
Features	Adaptable Splitting, Custom OEM/ODM and Bulk Supply, Enterprise-Grade Standards, Reliable Signal Integrity, Space-Saving Design

Disclaimer
Disclaimer	Indoor use only, designed for server and data center internal wiring

Additional Information
First Listed on Newegg	June 01, 2026

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Return for refund within: 30 days
Return for replacement within: 60 days
This item is covered by LetLinkSo Return Policy

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Item#: 9SIVSXPKY41008