10G Network Connectivity

To connect a USW-Lite-16-PoE switch to a device with 2.5GbE using SFP+, I need a compatible SFP+ to 2.5GBASE-T transceiver.

Connection Requirements

MS-A2 Side

• SFP+ port (10G capable, but can negotiate down)
• Needs SFP+ transceiver module

USW-Lite-16-PoE Side

• RJ45 Ethernet ports (1GbE)
• Standard Cat6/Cat6a cable connection

Transceiver Options

SFP+ to 2.5GBASE-T/5GBASE-T

MS-A2 [SFP+] ←→ [SFP+ to 2.5G-T Module] ←→ [Cat6a] ←→ [RJ45] USW-Lite-16-PoE

Recommended Transceivers

• 10Gtek 2.5G/5G/10G-T SFP+ Module (~$25-35)
• FS.com SFP-2.5G-T (~$20-30)
• Ubiquiti UF-RJ45-10G (~$79 - expensive but guaranteed compatibility)

Important Considerations

Speed Negotiation

• USW-Lite-16-PoE ports are 1GbE maximum
• Connection will negotiate down to 1GbE, not 2.5GbE
• MS-A2’s 2.5G capability won’t be utilized initially

Alternative Connection

MS-A2 [2.5G RJ45] ←→ [Cat6a] ←→ [RJ45] USW-Lite-16-PoE

• Use MS-A2’s built-in 2.5G RJ45 ports instead
• Still negotiates down to 1GbE
• Saves cost of SFP+ transceiver

Recommendation

For Initial 1GbE Setup

• Use MS-A2’s built-in 2.5G RJ45 ports
• Connect directly to USW-Lite-16-PoE with Cat6a cable
• Save SFP+ ports for future 10GbE upgrade

For Future 10GbE

• Reserve SFP+ ports for USW-Aggregation connection
• Use SFP+ DAC cables for 10G switch-to-switch connections

• Deploy SFP+ to RJ45 transceivers only where neededå

  This approach maximizes your current investment while preparing for the 10GbE upgrade path outlined in your BOM.