CircularTelecomParts Catalogue
Part Number
Part Overview
Manufactured by Sandstone, the CIS-QDD-4-400G-FR4-ST (Cisco compatible, 400G-FR4, QSFP-DD, for single mode fiber, 1270/1290/1310/1330nm, CWDM4, 2km, Host FEC required, LC duplex connectors, CMIS 4.0, DOM) is a QSFP optical transceiver module. Circular Telecom sources, tests, and resells surplus and refurbished Sandstone equipment like this as part of a lower-carbon alternative to new procurement.
Common Questions
The Sandstone CIS-QDD-4-400G-FR4-ST is a QSFP optical transceiver module, listed by the manufacturer as "Cisco compatible, 400G-FR4, QSFP-DD, for single mode fiber, 1270/1290/1310/1330nm, CWDM4, 2km, Host FEC required, LC duplex connectors, CMIS 4.0, DOM". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Sandstone network equipment, including parts such as the CIS-QDD-4-400G-FR4-ST, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue