The JBX03876 2-meter Cisco QSFP28 active optical breakout cable represents a premium solution for modern data center architectures demanding flexible, high-bandwidth connectivity. This cable directly replaces the Cisco QSFP-4X25G-AOC2M part number, providing seamless integration with existing infrastructure while delivering cost-effective breakout functionality. Key Technical Specifications: This active optical cable features a QSFP28 connector on one end that splits into four individual SFP28 connectors, enabling a single 100Gbps port to function as four independent 25Gbps connections. The OM3 50/125 multimode fiber core provides optimal performance for short-to-medium distance deployments, while the 2-meter length accommodates typical switch-to-switch or switch-to-server configurations within standard rack dimensions. Construction & Compliance: Manufactured with LSZH jacketing rated OFNR (Riser), the cable meets critical fire safety requirements for vertical installations in building risers. Comprehensive safety certifications including Class 1 Laser, UL/FDA (21CFR 1040.10), and TUV approval ensure compliance with international standards. The cable carries RoHS and ELV directives compliance, making it suitable for environmentally conscious deployments. Performance & Applications: Qualified to IEEE 802.3bm specifications, this breakout AOC delivers consistent 100GBASE-SR4 performance across its 2-meter span. It's ideal for high-density switch deployments where rack space limitations require multiple 25Gbps connections from consolidated 100Gbps ports. Common applications include hyperscale data centers, enterprise network cores, and multi-tenant environments requiring flexible bandwidth allocation. Operational Parameters: Operating across 0-70°C (32-158°F), the cable maintains performance in standard climate-controlled data center environments. The 90-day limited warranty provides protection against manufacturing defects, backed by domestic shipping infrastructure from multiple U.S. locations. Custom brand programming is available for OEM requirements.