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Oculink Cable SFF-8611 4i Long Extension Cable | PCIe 4.0 x4 Lanes, Male to Male, 4.9 feet (150 cm), for Oculink eGPU Dock ,onexGPU, Mini PC, SSD
LetLinkSo

LetLinkSo Oculink Cable SFF-8611 4i Long Extension Cable

Bottom line: The LetLinkSo Oculink Cable SFF-8611 4i Long Extension Cable: PCIe 4.0 x4 at 16 GT/s, enough bandwidth for eGPU docks and NVMe expansion; main trade-off: not compatible with Lenovo TGX interface, a common eGPU port.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ PCIe 4.0 x4 at 16 GT/s, enough bandwidth for eGPU docks and NVMe expansion
  • ✓ 4.9 ft (150 cm) run reaches a desk-side dock without a riser or extender
  • ✓ SFF-8611 metal locking latches hold the link under desk knocks
  • ✓ Backward compatible with earlier-gen Oculink PCIe hosts

Cons

  • ✗ Not compatible with Lenovo TGX interface, a common eGPU port
  • ✗ Latch housing may not seat in ultra-compact devices with recessed ports
  • ✗ Male-to-male only, so host-side gender mismatches need an adapter
  • ✗ Most eGPU docks ship a cable already, making this a spare for many buyers

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SpecPicks Verdict

SpecPicks scored LetLinkSo Oculink Cable SFF-8611 4i Long Extension Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. LetLinkSo's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • HIGH-PERFORMANCE GRAPHICS: Upgrade your portable devices and mini PCs with this Oculink sff-8611 cable, delivering desktop-level graphics capabilities for gamers, artists, and editors
  • ULTRA-FAST DATA TRANSFER: Experience PCI-Express Gen 4 speeds with 16 GT/s across oculink 4x 4-lane, perfect for handling large data transfers with ease
  • BACKWARD COMPATIBILITY: Backward compatible with Oculink PCIe 4.0, this Oculink cable is designed for both the latest and previous generation systems
  • IMPORTANT TIP：To save you from any unnecessary purchases, we kindly suggest verifying if your eGPU already has a cable included before ordering an additional one. Not compatible with Lenovo TGX interface
  • SECURE METAL LATCHES: Features locking latches (SFF-8611) for a rock-solid, stable connection. NOTE: Requires standard port clearance. May NOT fit ultra-compact devices with recessed ports. Please verify your device before ordering.

Full Specifications

BrandLetLinkSo
ColorBlack
ModelLLS-CB-1OC1OC-01
Frequency16 GHz
Cable TypePCIe 4.0
Item ShapeStrip-shaped
Model NameHigh-Speed Oculink SFF-8611 Cable
Unit Count1 Count
Part NumberLLS-CB-1OC1OC-01
CompatibilityPC
Connector Type42 Pin Oculink Sff-8611 Straight
Number of Pins42
Outer MaterialNylon, Polybutylene Terephthalate (PBT), Polyvinyl Chloride (PVC)
Number of Items1
Special FeatureBackward Compatible Future-Proofing, Compact High-Performance Graphics, Custom OEM/ODM and Bulk Supply, Minimalist Space-Saving Design, Ultra-Fast Data Transfer Rates
Connector GenderMale-to-Male
Specification MetRoHS
Compatible DevicesMini PC, Nvme SSD, Server, eGPU, onexGPU
Data Transfer Rate64 gigabits_per_second
Included ComponentsOculink SFF-8611 Cable x 1
Full listing titleOculink Cable SFF-8611 4i Long Extension Cable | PCIe 4.0 x4 Lanes, Male to Male, 4.9 feet (150 cm), for Oculink eGPU Dock ,onexGPU, Mini PC, SSD

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Oculink Cable SFF-8611 4i Long Extension Cable | PCIe 4.0 x4 Lanes, Male to Male, 4.9 feet (150 cm), for Oculink eGPU Dock ,onexGPU, Mini PC, SSD is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Oculink Cable SFF-8611 4i Long Extension Cable | PCIe 4.0 x4 Lanes, Male to Male, 4.9 feet (150 cm), for Oculink eGPU Dock ,onexGPU, Mini PC, SSD
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