MMS4X00-NM-FLT

• Twin-Port OSFP Form factor, 800 Gb/S Total as 2 X 400 Gbps
• 1310 Nm Single-Mode Fiber Optical interface, Reach Up to 500 M
• Dual MPO-12/APC Optical Connectors
• 3.3 V Operating supply, 16 W Power Dissipation
• Flat-Top Housing Variant for Externally Cooled Port Cages
• Operating Temperature Range of 0 C to 70 C

The MMS4X00-NM-FLT is an NVIDIA (Mellanox brand) twin-port OSFP optical transceiver module rated at 800 Gb/s aggregate, delivered as two independent 400 Gbps ports. The MMS4X00-NM-FLT operates at 1310 nm over single-mode fiber and terminates in two MPO-12/APC connectors, supporting reach up to 500 m. It uses a flat-top OSFP housing rather than a finned one, which is the variant intended for externally cooled switch and host ports.

Twin-port OSFP transceivers are used in AI and high performance computing fabrics where one switch cage must feed two downstream 400 Gbps endpoints, halving the switch ports needed for a given radix. The 1310 nm single-mode optics and 500 m reach of the MMS4X00-NM-FLT fit intra-datacenter row-to-row and spine-leaf links that exceed multimode distances. Hyperscale operators, GPU cluster builders and enterprise datacenter network teams deploy modules like this in Infini Band and Ethernet switch platforms. The flat-top mechanical option is chosen when the switch chassis provides the heat sinking.