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11 Mar, 2026





£300.44 inc. VAT
AI-generated summary
If you’re running legacy HPE switches/gear that take an **SFP (J4859C-style) 1GbE LX** module, this is a perfectly sensible, cost-controlled option. At **£250.78 ex-VAT for the 10-pack**, it’s the kind of buy-you-can-forget about—especially if you’re maintaining multiple sites or stocking spares. The fact it’s **DDM** is genuinely useful in day-to-day operations; you can spot optics drift early instead of waiting for mystery link drops.
That said, I’d only buy this if your environment is clearly aligned: **single-mode vs multi-mode** needs to be correct for your cabling, and you should confirm you actually need the **10km-class LX** behaviour (otherwise you’re paying for capability you don’t use). Also, don’t assume “compatible” means “interchangeable with zero caveats” in every HPE model—your best move is to check compatibility against the specific switch series/firmware you’re using and test one module before deploying the whole batch. If you’re chasing maximum reliability for critical links, it’s not that I’d avoid it outright—it’s that I’d validate first and then scale.

Qnap
QNAP - SFP+ transceiver module - 10GbE - 10GBase-SR - up to 300 m - 850 nm

STARTECH
StarTech.com Juniper RX-GET-SFP Compatible SFP Module, 1000BASE-T, SFP to RJ45 (Copper) Cat6/Cat5e, 1GE Gigabit Ethernet SFP, RJ-45 (Copper) 100m, 1Gbps Mini GBIC Transceiver SFP Module - Lifetime Warranty (RXGETSFPST) - SFP (mini-GBIC) transceiver module (equivalent to: Juniper RX-GET-SFP) - 1GbE - 1000Base-T - RJ-45 - up to 100 m

STARTECH
StarTech.com Dell EMC SFP-10G-LR Compatible SFP+ Module, 10GBASE-LR, 10GbE Single Mode (SMF) Fiber SMF Optic Transceiver, 10GE Gigabit Ethernet SFP+, LC Connector, 10km, 1310nm, DDM, SFP+ - Lifetime Warranty (SFP10GLREMST) - SFP+ transceiver module (equivalent to: Dell EMC SFP-10G-LR) - 10GbE - 10GBase-LR - LC single-mode - up to 10 km - 1310 nm

STARTECH
StarTech.com Cisco SFP-10G-SR Compatible SFP+ Module, 10GBASE-SR, 10GbE Multimode Fiber MMF Optic Transceiver, 10GE Gigabit Ethernet SFP+, LC 300m, 850nm, DDM, Cisco Firepower, ASR9000 - Lifetime Warranty (SFP10GSRST) - SFP+ transceiver module - 10GbE - 10GBase-SR - LC multi-mode - up to 300 m - 850 nm - for P/N: ET10GSFP, PEX10000SFP, PEX10000SFPI, PEX10GSFP, PEX10GSFP4I, PEX20000SFPI