200G QSFP56 SR4 Optical Transceiver The 200G QSFP56 SR4 100m MPO optical transceiver is a high-performance, energy-efficient solution designed for next-generation data center networks.  Featuring a compact QSFP56 form factor and MPO-12 duplex connector, it maximizes port density while consuming under 4W of power.  This transceiver is ideal for AI/ML clusters, hyperscale spine-leaf architectures, and 200G Ethernet uplinks. Its plug-and-play design simplifies deployment, offering a cost-effective migration path from 100G infrastructure.  Compliant with 200G-SR4 optical specifications  4x53.125Gb/s electrical interface (200GAUI-4)  Reach up to 70m on MMF(OM3)  Reach up to 100m on MMF(OM4)  Single +3.3V power supply  Case temperature range: 0 ~ +70℃  Maximum power consumption 4W  Single MPO12 connector  RoHS complaint 200G QSFP56 SR4 100M 400G QSFP-DD SR8 100M 400G QSFP-DD DR4 2KM 400G QSFP-DD LR4 10KM 400G OSFP SR8 100M 200G 400G 400G 400G 400G 100M 100M 2KM 10KM 100M 850nm 850nm 1310nm CWDM 850nm MPO MPO MPO LC MPO MM MM SM SM MM DDM DDM DDM DDM DDM COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C FAQ: Q1: What is 200G QSFP56?‌ A1: 200G QSFP56 is a high-speed optical module with 4x53.125Gb/s electrical interface (200GAUI-4), designed for 200G Ethernet and InfiniBand HDR networks in data centers. Q2: What is 400G QSFP-DD? A2: It is a high-density, hot-pluggable optical module interface supporting 400Gbps data rates, featuring 8 electrical channels for enhanced bandwidth. Q3: What are the main types of 400G QSFP-DD modules? A3: Common variants include SR8 (short-range), DR4/FR4 (intermediate), LR4/LR8 (long-range), and ER4/ER8 (extended-reach), with transmission distances ranging from 100m to 40km. Q4: How does QSFP-DD differ from QSFP28? A4: QSFP-DD doubles channel count (8 vs. 4) and supports 50Gbps PAM4 modulation per lane, achieving 4x higher bandwidth while maintaining similar port density. Q5: What is the maximum transmission distance for 400G QSFP-DD LR4? A5: The LR4 variant supports up to 10km over single-mode fiber (SMF) using 4x106Gbps lanes, ideal for 5G and cloud interconnects. (https://www.etulinktechnology.com/400g-qsfp-dd-lr4-10km-lc-optical-transceiver_p330.html) Q6: What is the electrical interface of QSFP-DD? A6: The module converts 8 channels of 50Gb/s (PAM4) electrical input data to 4 channels of CWDM optical signals and multiplexes them into a single channel for 400Gb/s optical transmission. Q7: Does QSFP-DD support digital diagnostics? A7: Yes, it includes DDM (Digital Diagnostic Monitoring) per MSA standards, enabling real-time monitoring of temperature, voltage, and optical power. Q8: What DAC options exist for 400G QSFP-DD? A8: Available configurations include direct QSFP-DD-to-QSFP-DD, or breakout to 2x200G QSFP56/4x100G QSFP56/8x50G SFP56 for flexible scaling. Q9: What is 400G OSFP?‌ A9: The OSFP (Octal Small Form-factor Pluggable) is a 400G optical module standard with 8 electrical channels, designed for high-speed data transmission in data centers and telecom networks. Q10: How does OSFP differ from QSFP-DD?‌ A10: OSFP has a larger form factor and non-compatible electrical interfaces, while QSFP-DD is backward-compatible with QSFP28 modules.