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Green circuit board with M.2 edge connector and OCuLink port linked by flat flexible cable

RIITOP

RIITOP M.2 NVMe to OCuLink SFF-8612 Extender 15cm

SKU CH-XC8P-HAM0A

Connects an OCuLink eGPU or U.2/U.3 SSD to a laptop M.2 NVMe PCIe x4 slot via a 15cm flexible circuit board, supporting PCIe 4.0 x4 at up to 64Gbps, with a cut-to-length 22mm-wide adapter board

  • Product typeExpansion Cards
  • Connect eGPU or U.2/U.3 SSD via laptop M.2 slot
  • PCIe 4.0 x4 support delivers up to 64Gbps bandwidth
  • Flexible 15cm FPC board eases cable routing in tight spaces
  • M.2 board trimmable to 22x30mm, 22x42mm, 22x60mm or 22x80mm
  • Requires M.2 NVMe PCIe x4 socket; SATA or x2 slots incompatible

M.2 NVMe to OCuLink Extender

This RIITOP adapter converts an M.2 NVMe PCIe 4.0 x4 socket into an OCuLink SFF-8612 port, enabling external GPU or U.2/U.3 SSD connections on laptops and mini PCs. A 15cm flexible circuit board links the M.2 plug to the OCuLink connector. The M.2 board measures 22x80mm and can be trimmed to 22x30mm, 22x42mm or 22x60mm to fit shorter slots. Data rates reach 64Gbps over PCIe 4.0 or 3.0 x4.

Compatibility check before ordering

Verify your device has an M.2 NVMe PCIe x4 socket; PCIe x2 or SATA-based M.2 sockets will not work. Confirm the laptop or mini PC firmware allows PCIe expansion through that slot for eGPU use by consulting the manufacturer documentation. No OCuLink cable is included, so you must source an SFF-8611 4i cable separately — note that SFF-8611 exists in 4i and 8i versions. A screwdriver and fixing screw are supplied for installation.

Build and daily use

The flexible 15cm circuit board lets you route the OCuLink port out of tight chassis openings without stressing the M.2 connector. Trimmable board lengths accommodate 2230, 2242, 2260 and 2280 slot depths, reducing the risk of protrusion. The SFF-8612 receptacle accepts standard OCuLink 4i cables for secure, latchable connections to eGPU docks or U.2/U.3 drive enclosures. No active components or power input are present on the adapter.

How it compares

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

Price $15.99
Cheaper than about 80% of the 891 comparable items (median $30.99).

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Specifications

Product
Product typeExpansion Cards

Questions about this item

Does the RIITOP extender come with the OCuLink cable I need for an eGPU?

The package includes the 15 cm NVMe-to-OCuLink board, a screwdriver and a fixing screw; the SFF-8611 4i cable must be sourced separately.

My laptop has a 2242 M.2 slot — will the 2280 board fit?

The PCB is 22 × 80 mm as supplied but can be cut at the marked 30 mm, 42 mm or 60 mm lines to match 2230, 2242 or 2260 slots.

What throughput can I expect when the adapter runs at PCIe 4.0 x4?

The link operates at PCIe 4.0 x4, delivering up to 64 Gbps of raw bandwidth to the connected eGPU or U.2/U.3 SSD.

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