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13 May, 2026
£572.27 inc. VAT
AI-generated summary
At £476.75 ex-VAT, this is firmly in “budget-free” territory for a transceiver. The upside is reliability: Cisco-branded 10GbE SFP+ copper (RJ-45) optics are usually less hassle with compatibility than third-party modules, and if you’re running a Catalyst ESS9300 Embedded Series in a Cisco-standard environment, it’s a safe buy. It’s also the right kind of module when you need short-reach 10GbE over existing copper cabling to keep costs down versus fibre—but only up to the stated copper distance.
Who should buy: teams standardising on Cisco gear, or those who value predictable behaviour over saving a few quid on compatibility. Who should *not*: anyone tempted by the “it’s just an RJ-45 transceiver” mindset. Copper 10GbE optics can get expensive fast, and if you’re only doing occasional links, you’ll often be better off sourcing cheaper certified alternatives (where appropriate) or planning for fibre if that better suits your long-term design.
If you’re already locked into the ESS9300 and want minimal admin and fewer surprises, it’s easy to justify. If you can’t explain why you need RJ-45 copper (as opposed to fibre or different link planning), then £476.75 is going to feel like money spent on certainty you might not actually need.

STARTECH
StarTech.com Cisco SFP-10G-LR-S Compatible SFP+ Module, 10GBASE-LR, 10GbE Single Mode (SMF) Fiber SMF Optic Transceiver, 10GbE SFP+ LC Connector, 10km, 1310nm, DDM, Cisco Firepower, ASR9000 - Lifetime Warranty (SFP10GLRSST) - SFP+ transceiver module (equivalent to: Cisco SFP-10G-LR-S) - 10GbE - 10GBase-LR - LC single-mode - up to 10 km - 1310 nm

STARTECH
StarTech.com Cisco Meraki MA-SFP-1GB-SX Compatible SFP Module, 1000BASE-SX, 1GbE MMF Optic Transceiver, LC Connector, 550m, 850nm, DDM, Cisco Meraki MS225, MX400, Mini GBIC Transceiver - Lifetime Warranty (MASFP1GBSXST) - SFP (mini-GBIC) transceiver module (equivalent to: Cisco Meraki MA-SFP-1GB-SX) - 1GbE - 1000Base-SX - LC multi-mode - up to 550 m - 850 nm

STARTECH
StarTech.com Cisco Meraki MA-SFP-10GB-SR Compatible SFP+ Module, 10GBASE-SR, 10GbE MMF Optic Transceiver, 10GE Gigabit Ethernet, LC Connector, 300m 850nm Cisco Meraki MS225, MX400, MS250 (MASFP10GBSR) - SFP+ transceiver module (equivalent to: Cisco Meraki MA-SFP-10GB-SR) - 10GbE - 10GBase-SR - LC multi-mode - up to 300 m - 850 nm

STARTECH
StarTech.com Juniper CTP-SFP-1GE-SX Compatible SFP Module, 1000BASE-SX, 1GbE Multimode Fiber MMF Optic Transceiver, 1GE Gigabit Ethernet SFP, LC Connector, 550m, 850nm, DDM, Mini GBIC - Lifetime Warranty (CTPSFP1GESXS) - SFP (mini-GBIC) transceiver module (equivalent to: Juniper CTP-SFP-1GE-SX) - 1GbE - 1000Base-SX - LC multi-mode - up to 550 m - 850 nm