QSFP-DD, an abbreviation of Quad Small Form-factor Pluggable (QSFP) – Double Density (DD), is a high-speed hot pluggable form factor. The common QSFP-DD transceivers include 400G QSFP-DD SR8, DR4, FR4, LR4, LR8.
400G QSFP-DD optical modules are the most common optical solutions for the 400G high data rate network connectivity. QSFP-DD is compatible with the QSFP port and is also compatible with the existing QSFP28 optical modules and AOC/DAC, etc. It’s wide used in 400GB Ethernet, data center, 5G back networks, and metro networks.
400G QSFP-DD DR4
400G QSFP-DD FR4
400G QSFP-DD LR4
400G QSFP-DD ER4