Model selection
Compare original part-number references.
Use optical specifications to form a shortlist, then confirm your device, firmware and coding requirements.17 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 |
|---|---|---|---|---|
| CISCO | QSFP-40G-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Cisco 40GBASE QSFP Modules Data SheetReviewed 2026-08-17 | Specification matchCheck host compatibility |
| ARISTA | QSFP-40G-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Arista Optics Modules and Cables Data SheetReviewed 2026-08-17 | Specification matchCheck host compatibility |
| JUNIPER | JNP-QSFP-40GE-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Juniper 40GBASE-ER4 Hardware Compatibility EntriesReviewed 2026-08-17 | Specification matchCheck host compatibility |
| JUNIPER | 740-066424 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Juniper 40GBASE-ER4 Hardware Compatibility EntriesReviewed 2026-08-17 | Specification matchCheck host compatibility |
| JUNIPER | QSFPP-40GBASE-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Juniper 40GBASE-ER4 Hardware Compatibility EntriesReviewed 2026-08-17 | Specification matchCheck host compatibility |
| JUNIPER | 740-059185 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Juniper 40GBASE-ER4 Hardware Compatibility EntriesReviewed 2026-08-17 | Specification matchCheck host compatibility |
| BROCADE | 40G-QSFP-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Brocade Transceiver Support MatrixReviewed 2026-08-17 | Specification matchCheck host compatibility |
| BROCADE | 57-1000327-01 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Brocade Transceiver Support MatrixReviewed 2026-08-17 | Specification matchCheck host compatibility |
| EXTREME NETWORKS | 40G-QSFP-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Pluggable Transceivers Installation GuideReviewed 2026-08-17 | Specification matchCheck host compatibility |
| EXTREME NETWORKS | 40G-QSFP-ER4-1 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. Pluggable Transceivers Installation GuideReviewed 2026-08-17 | Specification matchCheck host compatibility |
| H3C | QSFP-40G-ER4-WDM1300 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. H3C 40G QSFP+ Transceiver Module SpecificationsReviewed 2026-08-17 | Specification matchCheck host compatibility |
| HUAWEI | QSFP-40G-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. QSFP-40G-ER4 SpecificationsReviewed 2026-08-17 | Specification matchCheck host compatibility |
| HUAWEI | 02311BKT | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. QSFP-40G-ER4 SpecificationsReviewed 2026-08-17 | Specification matchCheck host compatibility |
| COHERENT / FINISAR | FTL4E1QM1C | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. 40GE Multi-rate QSFP+ Optical Transceiver Module – 40 kmReviewed 2026-08-17 | Specification matchCheck host compatibility |
| COHERENT / FINISAR | FTL4E1QE1C | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. 40GE Multi-rate QSFP+ Optical Transceiver Module – 40 kmReviewed 2026-08-17 | Specification matchCheck host compatibility |
| SMARTOPTICS | SO-QSFP-ER4 | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. SFP+ and QSFP+ Overview Data SheetReviewed 2026-08-17 | Specification matchCheck host compatibility |
| ALCATEL-LUCENT ENTERPRISE | QSFP-40G-ER | QSFP+ER4 | 40GBASE-ER4 QSFP+ transceiver, 1310 nm CWDM band, 40 km over SMF, duplex LC, with digital diagnostics. OmniSwitch AOS Release 8 Transceivers GuideReviewed 2026-08-17 | Specification matchCheck host compatibility |