10G SFP+ ER vs ZR Long-Haul Transceiver Guide
Need reliable long-distance 10G? This expert guide compares 10G SFP+ ER (40km) vs. ZR (80km). Learn the critical differences in link budget, power requirements, and cost for stable long-haul links.
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SFP Module Not Recognized? 7-Step Fix Guide
Fix SFP module not recognized errors with a practical 7-step checklist for vendor coding, EEPROM data, DOM/DDM readings, port speed, fiber match, firmware and compatible replacement modules.
40G QSFP+ vs 100G QSFP28 Upgrade Guide
Compare 40G QSFP+ vs 100G QSFP28 modules by bandwidth, SR4/LR4 reach, MPO cabling, power, cost per bit and upgrade planning.
Single Mode vs Multimode Fiber: Choosing the Right Fiber Optic Cable
Single mode vs multimode fiber: Learn the core differences in distance, speed, and cost. Our guide helps you choose the right fiber for your network.
What Is an SFP Port? SFP vs SFP+ vs QSFP Guide
Learn what an SFP port does, how SFP, SFP+, SFP28 and QSFP ports differ, when to choose fiber instead of RJ45, and how to match transceivers to switch ports.
QSFP28 vs. QSFP-DD: The Ultimate 100G vs. 400G Transceiver Guide
QSFP28 vs QSFP-DD: What's the difference? This 2025 guide details the 100G vs. 400G/800G form factors, pinout, and why QSFP-DD is the future.
LC Fiber Connector Guide: LC vs SC vs MPO
Compare LC fiber connectors with SC and MPO, including LC UPC vs APC, duplex and simplex choices, high-density cabling use cases, and PHILISUN product paths.
The 100G Transceiver Compatibility Guide: Why You Don’t Need OEM
Are OEM 100G transceivers too expensive? Learn how third-party compatible optics (Cisco, Arista) work safely and how PHILISUN guarantees 100% compatibility.
MPO Polarity Types A, B, and C Explained
Don't let MPO polarity mistakes shut down your network. Our guide (with diagrams) explains Type A, B, and C MPO polarity for 40G/100G data center links.