Spec score 8.3
QSFP56+, 400 Speed, Single-mode fiber, 1310 nm
+400 Gbps speed in QSFP-DD form factor
+Listed 1310 nm wavelength
+Cisco-compatible design with DOM monitoring
−Reach limited to 500 m
$7,200.00
as of 11/04/2026 06:06 PST - DetailsProduct details
Cisco QDD-400G-DR4-S Compatible 400GBASE-DR4 QSFP-DD PAM4 1310nm 500m DOM Transceiver Module (SMF, 1310nm, 500m,$7,200.00as of 11/04/2026 06:06 PST - Details
View on AmazonSpec score8.3
Pros
+400 Gbps speed in QSFP-DD form factor
+Listed 1310 nm wavelength
+Cisco-compatible design with DOM monitoring
Cons−Reach limited to 500 m
Compared with the 1 Network Transceivers on this page+400 speed: the highest speed of the 12 here
−500 reach or length: 8 of the 9 here have a higher reach or length
How pros and cons are picked (About: Disclaimer)