SFP optical module MaxLink ML-S31D-3 single-mode 1310nm 3 km

The SFP optical module MaxLink ML-S31D-3 single-mode 1310nm 3 km is a compact, hot-pluggable fiber transceiver designed for use in devices with SFP ports. It operates on a 1310 nm wavelength over single-mode fiber and supports point-to-point optic links with a specified reach up to 3 km. The module enables fiber uplinks between switches, routers and media converters in enterprise, campus and service provider access networks, providing straightforward fiber connectivity where short metro or access links are required.

Advantages

The MaxLink ML-S31D-3 offers a small form factor compatible with standard SFP slots, hot‑swappable convenience for minimal maintenance downtime and single‑mode 1310 nm operation suited to short-range fiber links up to 3 km. Its straightforward design focuses on interoperability with networking equipment that accepts SFP transceivers and on providing reliable optical uplinks without the need for external power or configuration.

Suitable for

• Connecting switches and routers over single‑mode fiber in access and metro segments
• Fiber uplinks between network closets and aggregation points
• Replacing or expanding SFP-based ports in enterprise and ISP equipment

Key specifications

• Optical type: single‑mode fiber
• Wavelength: 1310 nm
• Maximum transmission distance: up to 3 km
• Form factor: SFP (small form‑factor pluggable)
• Connector type: standard fiber SFP receptacle (LC compatible with SFP adapters)
• Hot‑pluggable: yes

How to use

Shut down or follow the host device’s hot‑swap procedure as recommended by the equipment manufacturer, insert the MaxLink ML-S31D-3 into an available SFP port until it seats firmly, and connect single‑mode fiber using appropriate LC patch cables or pigtails. Confirm link status on the host device and verify optical link parameters via the device management interface if available. For replacement, remove the existing transceiver according to the host’s instructions and insert the new module while the device supports hot swapping.

Usage recommendations

Use clean single‑mode fiber connectors and verify fiber polarity and attenuation for reliable performance. Keep the transceiver dust caps on when not connected, avoid mechanical stress on fiber cables near the connector, and ensure the host equipment supports standard SFP modules operating at 1310 nm for compatibility.