Detailed Specifications
HPE R0M47A - 50 Gb SFP56-to-SFP56 3 m DAC Cable
Overview
The HPE R0M47A is a passive twinax direct-attach copper cable of length 3 metres, designed for linking two compatible SFP56 ports in high-speed network equipment (for example access/aggregation or ToR switches). If you're connecting two switches in the same rack or adjacent racks and need a cost-effective short-reach link with 50 Gb/s capability, this cable fits the bill. It suits wiring-room or data-centre use where a short copper run is sufficient and fibre optics may be unnecessary. The cable supports 50 Gb Ethernet speeds, while being backwards-capable for 25 Gb or 10 Gb depending on port and system configuration. It is compatible with SFP56 ports on the HPE/Aruba equipment that supports 50G mode.
Key Features
3-metre length: provides flexibility for short-reach connections between two SFP56 ports without external transceivers.
50 Gb/s nominal data rate support: enables high-capacity stacking or switch-to-switch links.
SFP56 form-factor to SFP56 form-factor: plugs directly into compatible SFP56 ports on switches.
Passive twinax copper construction: lower cost and power compared to optical modules, ideal for short links in wiring-rooms.
Multi-rate capable: while rated for 50G, can operate at 25G or 10G depending on platform port speed configuration.
Technical Specifications
| Specification | Detail |
|---|
| Brand | HPE (Aruba Networking) |
| Part Number | R0M47A |
| Product Type | Direct-Attach Cable (DAC) SFP56-to-SFP56 |
| Key Spec - Interface | SFP56 form factor to SFP56 form factor |
| Key Spec - Maximum Speed | 50 Gb/s |
| Key Spec - Length | 3 m (≈ 9.84 ft) |
| Media Type | Passive twinax copper |
| Compatibility | Switches with SFP56 ports, supporting 50G mode |
| Temperature Rating | Commercial (0-70 °C) primary; extended options exist |
| Warranty | Standard manufacturer warranty (region-specific) |
