The 400G QSFP-DD to 4x 100G QSFP28 breakout active optical cables are designed for use in 400 Gigabit Ethernet links over OM3 multimode fibers, each operating at data rates of up to 53.125Gbps per channel for QSFP-DD by PAM4 modulation and 25.78128Gb/s per channel for QSFP28 with FEC support. This breakout cable is compliant with IEEE 802.3cd, CMIS Rev. 4.0, SFF-8679, SFF-8661, and SFF-8636. Thin and lightweight AOC cables simplify cable management, enabling an efficient system airflow, which is critical in high-density racks. It is used extensively in cloud and supercomputers due to its low cost, high-value proposition, and increased reliability.
Specifications
| Part Number | QDD-400G-4Q4xNAO01 | Vendor Name | KEXINT |
| Form Factor | QSFP-DD to 4x QSFP28 | Max Data Rate | 400Gbps |
| Cable Length | 1m (3ft) | Cable Type | OM3 |
| Wavelength | 850nm | Minimum Bend Radius | 30mm |
| Transmitter Type | VCSEL | Receiver Type | PIN |
| Power Consumption | QSFP-DD <12W, QSFP28 <3.5W | Jacket Material | OFNP |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR | Modulation Format |
8x 50G-PAM4, 4x 25G-NRZ
|
| DDM/DOM | Supported | Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | IEEE 802.3cd, CMIS Rev. 4.0, SFF-8679, SFF-8661, SFF-8636 | Host FEC | Pre-FEC BER 2.4E-4(PAM4), Pre-FEC BER 5E-5(NRZ), Post-FEC BER 1E-12 |
| Application | 400G to 4x 100G Ethernet | Warranty | 1 Years |
Connectivity Solutions
Feature
Low Power Consumption for Energy-saving
Featuring low-power and high-density, the AOC cable can reduce energy consumption and save energy costs.


Tested in Host Devices for Proven Interoperability
Every unit is quality tested in the targeted switch environment to guarantee flawless operations.




