OCP Server Interconnects
Open Compute Project (OCP) hardware trades proprietary server design for open, standardized interconnects — from management modules and rack-level power busbars to AI accelerator baseboards and storage. Here's how these specifications shape real hardware decisions for engineers building on OCP platforms.
More Key Articles
OCP DC-SCM Explained: The Data Center Secure Control Module Connector Interface
A detailed engineering guide to the OCP Data Center Secure Control Module (DC-SCM) connector interface, exploring board-to-board decoupling, high-speed signals, and server management physical design.
OCP OAM Connectors Explained: Accelerator Module Interconnect Design
Discover how OCP Open Accelerator Module (OAM) high-density mezzanine connectors handle high-speed interconnects, massive power delivery, and thermal tolerances in AI processing systems.
OCP Open Rack Busbar Power Connectors: ORv2 vs ORv3 Explained
Compare OCP Open Rack ORv2 and ORv3 busbar power connector architectures, examining 12V vs 48V current density, blind-mate tolerance, and contact design.
CRPS Explained: OCP's Common Redundant Power Supply Connector Standard
Explore the CRPS (Common Redundant Power Supply) connector interface, featuring card-edge pin assignment breakdown, hot-swapping mechanisms, and server chassis design.
EDSFF Connectors Explained: E1.S vs E3.S for OCP Server Storage
Compare EDSFF E1.S and E3.S storage connector form factors, examining SFF-TA-1002 edge interface pins, thermal airflow advantages, and high-density NVMe drive integration.
What Does "OCP/ORV3 Compliant" Mean? Connector Requirements Checklist
OCP connectors get called "compliant" loosely — but there's informal spec conformance, and then there's OCP Accepted™ and OCP Inspired™, two very different formal designations. Here's the actual checklist.
The Open Compute Project standardizes server hardware at the level most vendors used to keep proprietary — not just the CPU and memory, but how management modules connect, how power reaches each rack tray, how accelerators mount to a baseboard, and how storage drives interface with the chassis. For hardware engineers, this means a growing set of open, documented connector interfaces to design around instead of vendor-specific black boxes.
That standardization only helps if the physical interconnect details are actually understood — pin counts, voltage rails, mechanical retention, and thermal limits vary meaningfully across OCP's different subsystems. The articles below break down five of these interfaces individually: the DC-SCM management module connector, Open Rack's busbar power architecture, OAM accelerator interconnects, the CRPS power supply standard, and EDSFF storage connectors — plus the OCP NIC 3.0 interconnect framework that anchors this whole cluster.
Where This Shows Up
OCP interconnect standards show up together in a single server platform far more often than in isolation. A typical OCP-compliant server might combine a DC-SCM module for management, an Open Rack busbar connection for power, CRPS-compliant redundant power supplies, EDSFF drives for storage, and — in AI-focused deployments — OAM accelerator modules sharing the same chassis.
This is exactly why these specifications are documented together as one hub rather than as unrelated topics: an engineer specifying one OCP interconnect is very likely to need the others in the same design.
