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Green flat circuit board with M.2 connector on one end and OCuLink port on the other, 20cm flexible ribbon linking them

LetLinkSo

LetLinkSo LLS-CB-1MT1OC-01 M.2 to Oculink Adapter 20cm

SKU CH-CBS9-TVQ1J

Converts an M.2 slot to an OCuLink SFF-8611 port for eGPUs and SSDs at PCIe 4.0 x4 speeds

  • Supported standardsM.2 to Oculink 4i
  • Transfer speed16 GT/s (per lane)
  • Core speed16 GT/s (per lane)
  • Product typePCIe 4.0
  • Compatible withPCIe 4.0
  • Details0.66 ft (20 cm)

Length 0.66 ft / 20 cm

  • PCIe 4.0 x4 bandwidth up to 64 Gbps for high-speed external GPUs and SSDs
  • 20 cm flexible circuit fits tight laptop and mini-PC enclosures without signal loss
  • Board trimmable to 2230, 2242, 2260 or 2280 lengths for universal M.2 socket fit
  • Driver-free plug-and-play on Windows, Mac OS and Linux with included screwdriver and screw
  • Converts M.2 NVMe slot to OCuLink SFF-8611 4i host port for eGPU and storage expansion

Purpose & audience

This adapter converts an M.2 PCIe NVMe socket into an OCuLink SFF-8611 4i host port. It targets owners of laptops or mini PCs who want to attach an external GPU, a U.2 SSD or another PCIe expansion card without replacing the host system.

Deciding specification

The board carries a PCIe 4.0 x4 link rated at 16 GT/s per lane, delivering up to 64 Gbps of bandwidth. That single figure determines whether the adapter can saturate the device you plan to connect.

What the bundle changes

The package includes a screwdriver and a fixing screw, so the installer can trim the 22×80 mm PCB to 22×30 mm, 22×42 mm or 22×60 mm and secure it in 2230, 2242, 2260 or 2280 sockets. Driver-free operation on Windows, Mac OS and Linux means the hardware works immediately after a cold boot.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 78% of the 891 comparable items (median $30.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameLetLinkSo
Product lineM.2 to Oculink
Model nameLLS-CB-1MT1OC-01
Product typePCIe 4.0
Performance
Transfer speed16 GT/s (per lane)
Processor
Core speed16 GT/s (per lane)
Connectivity
Supported standardsM.2 to Oculink 4i
Size & build
Product weight3.7 oz
Compatibility
Compatible withPCIe 4.0
In the box
In the box1 x PCIe 4.0 M.2 to Oculink SFF-8612 Adapter

Other versions of this model

1 more in the same range

Questions about this item

What does the 64Gbps PCIe 4.0 x4 bandwidth mean when the adapter is installed in a laptop or mini PC?

It provides full four-lane PCIe 4.0 throughput so an external GPU or NVMe SSD can run at up to 64Gbps instead of being limited to a single lane.

Which OCuLink standard does the SFF-8612 connector follow and what does it cap?

The SFF-8612 plug follows the OCuLink 4i standard and caps the link at PCIe 4.0 x4 speeds.

What M.2 socket lengths does the 22×80mm board support after trimming?

The board can be cut to fit 2230, 2242, 2260 and 2280 M.2 slots.

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