HPE 487655-B21 BladeSystem c-Class 10GbE SFP+ 3m DAC Cable

• Brand: HPE
• OEM Part Number: 487655-B21
• Product Name: HPE BladeSystem c-Class 10GbE SFP+ to SFP+ 3m Direct Attach Copper Cable
• Product Type: Direct Attach Copper (DAC) cable
• Cable Category: HPE Direct Attach Copper Cable
• Network Speed: 10GbE / 10 Gigabit Ethernet
• Connector A: SFP+
• Connector B: SFP+
• Connector Configuration: SFP+ to SFP+
• Cable Length: 3 meters
• Cable Length: 9.84 feet approximately
• Transmission Medium: Copper
• Cable Design: Direct Attach Copper
• SFP+ Connectors: Permanently attached at both ends
• Standard Compliance: SFF-8431 compliant
• Environmental Compliance: RoHS compliant
• Primary Application: Short-range 10GbE data-center connections
• Platform Family: HPE BladeSystem c-Class
• Compatibility: Supported HPE BladeSystem/networking configurations
• Related 5m Model: 537963-B21
• Related 0.5m Model: 487649-B21 — obsolete
• Related 1m Model: 487652-B21 — obsolete
• Optical Transceivers Required: No separate optical transceivers required for the integrated DAC assembly
• Fiber Cable Required: No; copper DAC construction
• Deployment Type: Short-range direct equipment interconnect
• Procurement Category: Server/networking cable and cable kit
• Primary Buyer: Data-center, server, network and infrastructure procurement teams

Why Choose This Product?

• Purpose-built 10GbE interconnect: Designed specifically for short-range 10GbE connectivity rather than generic copper networking.
• 3m reach for compact deployments: The 3-meter length is useful when connected equipment is located within the same rack or nearby infrastructure.
• Simplified installation: Integrated SFP+ ends eliminate the need to separately purchase and install optical modules and patch cables for the DAC link.
• Potentially lower deployment cost: HPE positions Direct Attach Copper as a cost-effective alternative to fiber optics for suitable applications. 
• Reduced component count: One integrated cable assembly can simplify BOMs, inventory management, and physical installation.
• HPE-specific procurement reference: 487655-B21 provides an exact OEM identifier for replacement and standardized deployments.
• Established SFP+ compliance: SFF-8431 compliance gives network planners a defined interface standard when evaluating compatible equipment. 
• Suitable for data-center density: Short copper DAC links can help keep rack-level connections compact without unnecessary fiber infrastructure.