Detailed Specifications
HPE J9281B - 10 Gb/s SFP+ to SFP+ Passive Direct-Attach Copper Cable (1 m)
Overview
The HPE J9281B is a fixed-length (1 metre) passive direct-attach copper cable (twinax) designed to plug directly into SFP+ ports on switches, servers or storage devices rated for 10 Gb/s. Because it is a DAC (and not an active optical cable), it is cost-efficient for short-reach interconnects (typically within a rack or between adjacent racks) where latency and power consumption must be minimal. The cable supports the 10 Gb/s data rate and is compatible with HPE/Aruba switching platforms (and other vendor ports that accept the form-factor) as part of short-reach high-density data-centre designs.
Key Features
Rated for 10 Gb/s (10G) throughput via SFP+ form-factor on both ends.
Length: 1 metre (≈ 3.3 feet) × optimized for short-reach in-rack or adjacent-rack links.
Direct-attach copper twinax cable (AWG 30, 30 AWG gauge typical) with SFP+ plugs on each end × no separate module + patch cable required.
Low-power, low-latency link ideal for high-density server or switch interconnections in enterprise or data centre racks.
Recognised in HPE/Aruba compatibility matrix for SFP+ DACs on relevant switch series.
Technical Specifications
| Specification | Detail |
|---|
| Brand | HPE (Hewlett Packard Enterprise) |
| Part Number | J9281B |
| Product Type | SFP+ to SFP+ Passive Direct-Attach Copper Cable (DAC) |
| Key Specification | Data Rate: 10 Gb/s |
| Key Specification | Length: 1 metre |
| Key Specification | Connector: SFP+ on both ends |
| Cable Type | Twinax copper, AWG 30 gauge approximate |
| Operating Temperature | 0 °C to 70 °C (standard commercial) |
| Storage Temperature | -40 °C to 85 °C (cited by third-party) |
| Compliance | SFF-8431 / SFF-8432, RoHS-compliant |
