A short host cable that converts M.2 M-Key sockets to OCuLink SFF-8612 for high-speed NVMe and eGPU connections, NFHK M.2 to OCuLink Cable. A simple route to add NVMe storage or an external GPU to compact desktops and laptops, saving space and installation hassle. Is PCIe 4.0 bandwidth and server-grade connectivity worth reworking a system's layout?
⚡ At a Glance
- • Data Transfer: Supports PCIe 4.0 over NVMe with data rates up to 64Gbps
- • Best for: Users needing to connect NVMe M.2 storage or eGPU to OCuLink hosts
- • Not ideal for: Systems without an M.2 M-Key socket or without compatible OCuLink host ports
One end uses a 67-pin M.2 Key M male connector and the other an OCuLink SFF-8612 female. PCIe Gen 4 signal transmission with NVMe 1.2 support enables high-speed external or internal expansion.
High-speed NVMe transfers, thanks to PCIe 4.0 signal transmission
PCI Express Gen 4 lanes carried over the cable use the NVM Express 1.2 protocol and support data transfer rates up to 64Gbps. Electrical signalling remains compatible with PCIe Gen 3 for fallback operation.
Sustained high throughput accelerates large file moves and storage-heavy workflows, making NVMe drives behave like native storage in many setups.
Broad compatibility, with OCuLink SFF-8612 and M.2 Key M connectors
A 67-pin M.2 Key M male mates to M.2 2280 M-Key sockets while an SFF-8612 OCuLink female links to server-grade OCuLink hosts. Compatibility notes include SFF-8611, SFF-8612 and T10/SAS-4 signalling where applicable.
Direct electrical connectivity supports NVMe SSDs, optional eGPU cabling and expansion cards in hosts that expose the matching sockets, reducing adapter complexity.
Compact installation, with 15cm length and fixing holes
A 15cm cable length includes fixing holes for secure mounting and shorter internal routing. Design suits small hosts, desktops and laptops where space is limited.
Neat internal routing reduces cable strain and keeps external connections stable inside tight cases, improving reliability in compact builds.
✨ The 4 Key Reasons for NFHK M.2 to OCuLink Cable
- PCIe 4.0 support – Enables up to 64Gbps NVMe transfers for fast storage workflows
- OCuLink SFF-8612 connector – Allows direct connection to server-grade OCuLink hosts for peripherals
- Supports GPUs and SSDs – Permits external eGPU or NVMe SSD use in compatible systems
- Compact 15cm length with fixing holes – Fits small hosts and secures connections in tight spaces
📋 Technical Details at a Glance
- Category: Host cable adapter
- Connectors: 1 x OCuLink SFF-8612 female
- Connectors: 1 x 67-pin M.2 Key M male
- Length: 15cm
- Protocol support: PCIe Gen 4, NVMe 1.2
❓ Frequently Asked Questions
Q: Can an M.2 NVMe SSD be connected to an OCuLink host using this cable?
A: Direct connection of an M.2 NVMe SSD to an OCuLink SFF-8612 host is supported, enabling NVMe protocol access across the link.
Q: Does the cable support PCIe 4.0 speeds?
A: PCIe Gen 4 signal transmission is supported, with data transfer rates specified up to 64Gbps and NVM Express 1.2 compatibility.
Q: Can the cable be used with eGPU setups?
A: Support for connecting GPU graphics cards is indicated when used alongside an optional compatible cable for eGPU or expansion card installations.
🏆 Our Verdict
Suitable for enthusiasts and small-system builders who need to bridge M.2 NVMe sockets to OCuLink hosts for storage or external GPUs. The core selling point is direct PCIe Gen 4 over OCuLink connectivity with server-standard connectors and secure mounting. While more specialised than generic leads, long-term value comes from high throughput and compatibility with server-grade signalling.
