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HPE

HPE 655874-B21 | 40G QSFP+ to 10G SFP+ adapter | form: QSA (QSFP+ cage to SFP+) | standard: 10GBASE/40GBASE pass-through | wavelength: per SFP+ | reach: per SFP+ | connector: per installed SFP+ (e.g., LC or RJ-45)

SKU:655874-B21

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Description

QSFP+ to SFP+ adapter that enables the use of 10G SFP+ optical or copper modules/cables in a 40G QSFP+ host port. Ideal for gradual 10G-to-40G migrations, lab flexibility, and mixed-speed environments. Check platform support for QSA functionality.

Features

- Enables 10G SFP+ modules in 40G QSFP+ ports
- Cost-effective migration path from 10G to 40G
- Passive design with no additional power or latency
- Maximizes port flexibility for mixed-speed deployments
- Supports optical, DAC, and certain copper SFP+ modules

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: Does this adapter convert 40G to 10G electrically or optically?
A: It is a passive adapter that allows a 10G SFP+ to operate in a QSFP+ host cage; it does not perform signal conversion.

Q: What reach and wavelength are supported?
A: Reach and wavelength are entirely determined by the installed SFP+ transceiver or cable.

Q: Will this work in any QSFP+ port?
A: Only QSFP+ ports that explicitly support QSA adapters are compatible. Consult the platform documentation.

Q: Can I use 10GBASE-T SFP+ modules with this?
A: Yes, if your platform supports QSA and the 10GBASE-T SFP+ module is supported by the host.

Technical Specifications

- Host interface: QSFP+ (40G) cage
- Module interface: SFP+ (10G) module or DAC/AOC
- Speed support: 40G host port downshift to 10G
- Operation: passive electrical adapter (no wavelength conversion)
- Standards: IEEE 802.3ae (10GBASE), IEEE 802.3ba (40GBASE)
- Wavelength/Reach: determined by installed SFP+ or cable
- Connector type: determined by installed SFP+ (e.g., LC for optics, RJ-45 for 10GBASE-T)
- Use cases: migration from 10G to 40G, test/lab flexibility
- Compatibility: requires switch/NIC/port support for QSA adapters

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