SFP transceiver module Lenovo 78P3817 1G single‑port fiber/network uplink

Lenovo 78P3817 SFP transceiver module is a 1G single‑port small form‑factor pluggable (SFP) device intended for use in compatible switches, routers and servers to provide a single Gigabit uplink over optical or copper media. The module supports hot‑swappable insertion and removal, enabling quick replacement or upgrade of SFP ports without powering down the host device. Its compact SFP form factor allows flexible deployment in rack and chassis systems where space and modularity are important.

Advantages

The Lenovo 1G SFP module offers a compact, standardized interface that simplifies link upgrades and maintenance. Its hot‑swappable design reduces downtime during replacement or reconfiguration. The transceiver supports industry‑common link negotiation and error reporting features of SFP ports, allowing predictable integration with compatible network devices. The single‑port configuration provides a straightforward, cost‑efficient way to add or restore a Gigabit uplink in existing infrastructure.

Suitable for

• Adding a 1 Gigabit uplink to managed and unmanaged Ethernet switches
• Connecting servers or storage devices to network aggregation switches
• Replacing or upgrading existing SFP ports in rack‑mounted network equipment
• Short‑ to medium‑range fiber or copper uplink links where 1G throughput is sufficient

Key specifications

• Form factor: SFP (small form‑factor pluggable)
• Data rate: 1 Gigabit per second (1 Gbps)
• Port count: single port
• Media support: compatible with optical fiber or copper transceiver variants depending on host compatibility
• Hot‑swappable: supports insertion and removal without powering down host equipment
• Compatibility: designed for use with compatible Lenovo networking equipment and other devices supporting standard SFP modules

How to use

Verify that the host device supports SFP modules and the desired media type (optical or copper). Power requirements for insertion are handled by the host; insert the transceiver gently into the SFP slot until it latches. For optical links, connect the appropriate LC fiber patch cord and ensure correct transmit/receive orientation. For copper variants, connect the corresponding cable and check link negotiation on the host. Monitor link status LEDs and host device logs to confirm that the module is recognized and operating at 1 Gbps. Remove the module by releasing the latch and pulling it straight out; use ESD precautions when handling.

Recommendations

Use compatible fiber type and connector polish as specified by the host and cabling plan; clean optical connectors before mating to minimize signal loss. Observe electrostatic discharge precautions and handle the SFP by its housing to avoid damage. When replacing modules in active networks, plan maintenance windows or rely on redundant links to prevent service interruption.