Model selection
Compare original part-number references.
Use optical specifications to form a shortlist, then confirm your device, firmware and coding requirements.1 references · Page 1 of 1
A specification match is not a host validation result. Multiple matching models remain marked for review.
| Brand | Original part number | Model reference | Optical specification reference | Next step |
|---|---|---|---|---|
| SMARTOPTICS | SO-QSFP-LR4-20 | QSFP+LR4-20 | 40G LR4 QSFP+ transceiver, 1271/1291/1311/1331 nm, 20 km over SMF, duplex LC, with digital diagnostics. SFP+ and QSFP+ Overview Data SheetReviewed 2026-08-17 | Specification matchCheck host compatibility |