400GBase-ZR4 Data Sheets for QSFP-DD Optical Transceivers Compatible with:
The 400GBase-ZR4 uses a 76-pin QSFP-DD MSA QSFP-DD Hardware Specification connector for all electrical interfaces with the host card, whereas the optical interfaces on the line side are provided through the optical receptacles on the QSFP-DD. The module can be portioned into three functional parts: TX path, RX path and Control & Power block.