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Black rectangular M.2 to OCuLink adapter board 17 cm long with 15 cm flex cable

OwlTree data adapter

SKU CH-1859-GPXTN

Connects an M.2 NVME slot to an OCuLink SFF-8611 host for eGPU or SSD use at PCIe 4.0 x4 64Gbps

  • First connectorM.2 NVME Pcie to OCuLink SFF-8612
  • Second connectorM.2 NVME Pcie to OCuLink SFF-8612
  • Connector genderM.2 NVME Pcie to OCuLink SFF-8612
  • Connector finishBlack
  • Connector typeM.2 NVME Pcie to OCuLink SFF-8612
  • Product typeBlack
  • Enables external GPU via M.2 NVME slot with PCIe 4.0 x4 64Gbps bandwidth
  • Supports M.2 NVME SSD sizes 2230 2242 2260 2280 for flexible storage expansion
  • Compact 17 x 2.2 x .5 cm adapter fits tight laptop chassis
  • Includes 15cm FPC circuit board for reliable signal integrity at high speed
  • Requires PCIe x4 NVME support; incompatible with x2 or SATA M.2 sockets

M.2 NVMe to OCuLink Adapter

This adapter converts an M.2 NVMe PCIe x4 slot into an OCuLink SFF-8612 connection for external GPU docks or U.2/U.3 SSDs. It targets builders adding graphics or storage to systems with a compatible M.2 key-M socket. Laptops without PCIe protocol support on their M.2 port cannot use this adapter for eGPU expansion.

Build Integration Requirements

The host must provide a PCIe 4.0, 3.0 or 2.0 x4 NVMe interface; x2 slots and SATA-based M.2 sockets are not supported. No OCuLink cable is included, so a separate SFF-8611 4i cable must be sourced. The 15 cm FPC board and 5.9 inch overall length allow flexible routing inside compact chassis or external enclosures.

Thermals and Power Profile

The passive circuit board draws negligible power and adds no active cooling noise to the system. Thermal performance depends entirely on the host M.2 slot airflow and the attached eGPU or SSD enclosure. PCIe 4.0 x4 operation sustains up to 64 Gbps bandwidth without throttling from the adapter itself.

How it compares

Measured against everything we stock in Interface & Card Adapters, at today’s prices. Recalculated every night.

Price $30.99
Pricier than about 74% of the 354 comparable items (median $21.99).

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Specifications

Product
Brand nameOwlTree
Product typeBlack
Product colorBlack
Ports & slots
First connectorM.2 NVME Pcie to OCuLink SFF-8612
Second connectorM.2 NVME Pcie to OCuLink SFF-8612
Connector genderM.2 NVME Pcie to OCuLink SFF-8612
Connector typeM.2 NVME Pcie to OCuLink SFF-8612
Size & build
Connector finishBlack
Product dimensions17 cm × 2.2 cm × 0.5 cm
In the box
In the box1

Questions about this item

What is the maximum data transfer rate of the PCIe 4.0 x4 link on this adapter?

The adapter supports PCIe 4.0 x4 with a data transfer rate of up to 64 Gbps, ensuring no speed limitations for connected eGPU or SSD devices.

How much power does the adapter itself draw during continuous operation?

The adapter is a passive circuit board with no active components, so it draws negligible power and generates no measurable heat or noise during all-day use.

Which M.2 slot key and protocol must my laptop or motherboard provide for this adapter to function?

Your system must provide an M.2 M-key socket wired for PCIe x4 NVMe; the adapter is incompatible with PCIe x2 slots and all SATA-based M.2 sockets.

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