The JBX03879 2m 100GBASE-SR4 QSFP28 active optical cable represents a premium solution for high-speed network infrastructure. As a direct HPE 845420-B21-2M compatible replacement, this breakout AOC cable seamlessly integrates into existing HPE networking ecosystems while offering exceptional performance and reliability. **Technical Specifications:** This cable features a QSFP28 male connector on one end with four SFP28 connectors on the breakout side, enabling flexible network configurations. The 8-strand OM3 50/125 multimode fiber core provides exceptional signal integrity and supports 100Gbps data transmission over the 2-meter length. The LSZH (Low Smoke Zero Halogen) jacket with OFNR (Optical Fiber Non-Conductive Riser) rating ensures compliance with building codes and fire safety standards, making it suitable for vertical riser installations and indoor environments. **Performance & Compatibility:** Qualified to IEEE 802.3bm standards and SFF-8665 specifications, this AOC cable delivers reliable 100GBASE-SR4 performance in demanding data center environments. The multimode construction excels in short-range applications, typically supporting distances up to 100 meters, while active circuitry compensates for signal attenuation and ensures consistent performance. **Safety & Compliance:** Multiple certifications including Class 1 Laser, UL/FDA (21CFR 1040.10), and TUV compliance demonstrate this cable's adherence to international safety standards. RoHS and ELV directive compliance ensure environmentally responsible manufacturing and operation. **Deployment Advantages:** Active optical cables eliminate the need for separate transceivers and external power supplies, reducing deployment complexity and overall system cost. The breakout configuration allows single 100GB connections to scale to four independent 25GB SFP28 connections, providing network architecture flexibility. Operating temperature range of 0-70°C supports both standard data center and warm-climate installations. **Warranty & Support:** Backed by a 90-day limited warranty and eligible for free standard shipping on orders over $99, this cable provides excellent value for enterprise and small-to-medium business networks. Custom brand programming is available for organizations requiring OEM-branded solutions. **Applications:** Ideal for high-speed server interconnects, storage networking, backup systems, and virtual machine migration between data center locations. The 2-meter length accommodates rack-to-rack installations while maintaining signal integrity.