Minisforum EOP4A: Unusual OCuLink adapter card launches globally – NotebookCheck.net News
The EOP4A is an OCuLink adapter card from Minisforum. Best known for its mini-PCs, Minisforum claims that the EOP4A should not face any signal loss when connected to an eGPU thanks to its built-in redriver chip. The Minisforum EOP4A is available to order now.
Minisforum has quietly started selling the EOP4A, which has launched today alongside the BD895i SE motherboard. A PCIe to OCuLink adapter card, the EOP4A aims to simplify eGPU and storage setups for mini PCs that lack full-length PCIe slots.Nonetheless, the new accessory can connect with PCIe x1, x4, x8 or x16 slots
As the picture below shows, the EOP4A contains just an OCuLink port on its rear, which Minisforum clarifies is an SF-8612 interface to connect with eGPUs like its DEG1 (curr. $99 on Amazon). Thus, the adapter should deliver PCIe 4.0 ×4 with a 64 Gbps peak bandwidth. It is worth noting that one can only achieve these speeds when the EOP4A is placed in an x4, x8 or x16 PCIe 4.0 or PCIe 5.0 connector. Otherwise, peak bandwidth will drop significantly, particularly when pairing the EOP4A with a PCIe 3.0 connector.
Moreover, the company has included a redriver chip to reduce data errors and maintain signal integrity. Apparently, the 40 x 80 mm adapter provides a plug-and-play experience with no dedicated drivers required too. For reference, Minisforum includes 8 cm low-profile and 12 cm full-height brackets as well.
The EOP4A can be picked up from Minisforum for £69 (~$93) in the UK and €55 (~$65) in the Eurozone, reduced from alleged £89 (~$119) and €69 (~$94) MSRPs, respectively. While listed on Minisforum’s US website, the device is not currently orderable. Please see the company’s product listing for more details.
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Alex Alderson – Senior Tech Writer – 13901 articles published on Notebookcheck since 2018
Prior to writing and translating for Notebookcheck, I worked for various companies including Apple and Neowin. I have a BA in International History and Politics from the University of Leeds, which I have since converted to a Law Degree. Happy to chat on Twitter or Notebookchat.
Alex Alderson, 2025-12-16 (Update: 2025-12-17)
