OEM . Unopened in clam shells. Arista QDD-400G-XDR4 is a high-quality switch module designed for enterprise networking and servers. With a maximum data rate of 400 Gbps and a range of 2km over parallel SMF, it offers fast and reliable connectivity. This product is compatible with universal brands and features MPO-12 connectors as well as QSFP-DD ports for easy integration into existing systems. The brand, Arista, is known for producing top-tier networking equipment, making this switch module a dependable choice for businesses looking to upgrade their network infrastructure.