740-057315 Juniper Networks QSFP+ 40G breakout into 4x10GBASE LR up to 10km
740-057315 Overview
The 740-057315 (JNP-QSFP-4X10GE-LR) is a specialized Juniper QSFP+ optical module designed to break a single 40G port into four independent 10G connections. Each lane operates as 10GBASE-LR, supporting distances up to 10 km over single-mode fiber.Unlike standard 40G LR4 optics (which use duplex LC), this module uses an MPO-12 connector and operates with parallel optics, where 4 transmit and 4 receive fibers carry separate 10G signals.This makes it ideal for scenarios where you need to connect a 40G switch port to four 10G devices, such as servers, access switches, or aggregation layers. It is commonly used in data centers and enterprise networks for flexible port utilization.
$523
740-057315 Technical Specifications
Juniper Networks QSFP+ 40G breakout into 4x10GBASE LR up to 10km
Manufacturer: Juniper
Manufacture Part Number: 740-057315
Type: QSFP+ Breakout Optical Transceiver
Data Rate: 40Gbps → 4 × 10Gbps (Breakout)
Interface: 4 × 10GBASE-LR
Wavelength: 1310nm
Media Type: Single-Mode Fiber (SMF)
Maximum Distance: Up to 10 km
Connector: MPO-12 APC (QSFP+) → 4 × LC (via breakout cable)
Form Factor: QSFP+
Standards: IEEE 802.3 (10GBASE-LR)
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SKU: QFX-QSFP-40G-ESR4 -
