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Optics Transceivers | SFP Modules
10/25/40G/100G Transceiver Modules
40G QSFP+

40G QSFP+

Shop LINK-PP compatible 40G QSFP+ modules for enterprise and data-center uplinks. This category groups MSA-aligned 40GBASE optics—SR4, CSR4, LR4, ER4, PLR4, BiDi/SR-BD, and related reachescoded for Cisco, Arista, Juniper, NVIDIA, and other major platforms. Start from the parent optics hub when you still need 1G25G rates, or open a Cisco compatible PN when the OEM part number is already known. Match host QSFP+ cage, fiber type (MMF vs SMF), connector (MPO vs duplex LC), and rated reach on each product page before ordering.

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Frequently asked questions

01.Which 40G QSFP+ types does this category cover?
This store lists LINK-PP compatible 40G QSFP+ modules for 40 Gigabit Ethernet and related interconnects—SR4 / CSR4 parallel multimode, LR4 / ER4 / ZR duplex single-mode, PLR4 parallel single-mode, and BiDi/SR-BD duplex multimode where stocked. Use on-page filters to narrow by reach, or return to the parent optics hub for other rates.
02.How do I choose SR4 vs LR4 vs ER4 vs SR-BD for 40G?
Match media and distance first: SR4 for short multimode (typically up to about 100–300 m on OM3/OM4 with MPO-12), LR4 for about 10 km duplex LC single-mode, ER4 for about 40 km duplex LC single-mode, and SR-BD/BiDi for short multimode over duplex LC when you want to reuse existing LC trunks. Confirm wavelength plan, connector polish, and power class on the product page.
03.What breakout options exist for 40G QSFP+?
Many 40G QSFP+ SR4 and parallel single-mode SKUs can break out to 4×10G with an MPO-to-4×LC harness when the host and peer optics support it. Duplex LR4/ER4/BiDi modules are not 4×10G breakout optics. Check the individual PDP and your switch breakout CLI before ordering harnesses or fan-out cables.
04.Are these 40G QSFP+ modules coded for Cisco, Arista, Juniper, and NVIDIA?
Yes—select the Compatible PN that matches your OEM platform. LINK-PP 40G QSFP+ modules follow MSA electrical/optical specs and are EEPROM-coded for the target brand. Browse the Cisco compatible hub (or Arista / Juniper / NVIDIA hubs) and open the PDP that lists your switch part number.
05.Do LINK-PP 40G optics support DOM?
Most optical 40G QSFP+ SKUs support digital optical monitoring (DOM/DDM) for temperature, voltage, and Tx/Rx power per the datasheet. Confirm DOM support, temperature range (commercial vs industrial), and rated reach on the product page before you order.

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