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Silver rectangular QSFP+ transceiver module with LC port

HP

HP X140 JG661A 40Gb 40GBase-LR4 10km 1310nm QSFP+ Transceiver

SKU CH-N2J9-VH0V9

A 40 Gbps QSFP+ transceiver reaching 10 km over single-mode fibre at 1310 nm

  • Port count1 x LC 40GBase-LR4 Network
  • Product typeQSFP+
  • Optical wavelength1310 nm
  • Maximum range10km
  • Transfer speed40 Gbit/s
  • 40 Gbps throughput for high-capacity links
  • 10 km reach over single-mode fibre
  • 1310 nm wavelength suited to LR4 optics
  • QSFP+ form factor with LC duplex connector
  • HP X140 module validated for 40GBase-LR4 networks

HP X140 JG661A 40Gb QSFP+ Transceiver

The HP X140 JG661A is a 40Gb QSFP+ transceiver module designed for single-mode fibre connections. It operates at a 1310nm wavelength and supports the 40GBase-LR4 standard for long-reach links. Network engineers use it to connect switches and routers across campus or metro distances.

Suits 40G single-mode links up to 10km

This module fits environments that need 40 Gbps throughput over single-mode fibre with LC connectors at distances up to 10km. It is not for multi-mode fibre plants, shorter-reach SR4 requirements, or networks that have not adopted the 40GBase-LR4 interface.

1310nm wavelength and 10km reach decide fit

The 1310nm wavelength paired with a 10km maximum distance is the specification that determines compatibility. Verify that your line cards and patch cords match single-mode 40GBase-LR4 before ordering.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 91% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameHP
Product typeQSFP+
Performance
Transfer speed40 Gbit/s
Connectivity
Optical wavelength1310 nm
Maximum range10km
Ports & slots
Port count1 x LC 40GBase-LR4 Network

Questions about this item

Will this JG661A QSFP+ transceiver link with my existing 10 Gbps SFP+ ports?

No, the module uses a 40 Gbps QSFP+ interface and cannot plug directly into 10 Gbps SFP+ cages; a compatible 40 Gbps QSFP+ port is required.

How can I verify the 1310 nm link is operating at the rated 10 km distance after installation?

Check the switch port diagnostics for a stable 40 Gbps rate, low receive power within the LR4 specification, and zero CRC errors on the LC single-mode fiber path.

Does the box include the LC single-mode patch cables needed for the 10 km run, or must they be purchased separately?

Only the JG661A transceiver module is supplied; LC single-mode fiber patch cables for the 1310 nm 10 km link must be sourced separately.

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