Ubiquiti 100G PSM4 Single-Mode Optical Module (QSFP28)

You need 100G over a shorter single-mode run — same building, adjacent data halls, or that 2 km link the LR4 is overkill for. This Ubiquiti PSM4 QSFP28 module delivers 100 Gbps over single-mode fibre up to 2 km using an MPO-12 APC connector, which means one cable carries all four lanes. Compatible with both QSFP28 and QSFP+ ports. One important note: you need OS2 single-mode fibre for the full 2 km. If your existing run is OS1, your max drops to 500 m. Check the cable spec before you pull it. Fibre not included

• 100 Gbps max data rate
• Compatible with QSFP28 and QSFP+ interfaces
• MPO-12 Type B APC connector — single-cable 4-lane link
• Single-mode fibre runs up to 2 km (OS2) or 500 m (OS1)
• Fibre cable not included