- Internet & Connectivity
How to Choose Between Symmetric and Asymmetric Broadband
18 Mar, 2026





£240.38 inc. VAT
AI-generated summary
At ~£200 ex-VAT for a 10GBASE-LR SFP+ with DDM, this is the kind of item that’s worth buying when you *actually* need single‑mode reach and you’re plugging it into a supported platform. In real deployments, the “value” of these modules usually comes down to two things: whether your switch/router behaves happily with it, and whether DDM works cleanly for monitoring. If you’re trying to extend a link over longer runs on SMF (often across a site, between racks, or between buildings), LR is the sensible choice—and this should do the job without drama assuming your switch vendor compatibility is covered.
That said, I wouldn’t buy it just because it’s cheaper than the brand-name module unless you’ve verified compatibility for your exact switch models. Compatible optics can be perfectly fine, but the pain point in B2B is usually vendor behavior—some gear is picky about transceivers and will either refuse them or behave oddly under certain conditions. If you’re only doing short distances on multimode, or you don’t have SMF in place, it’s also the wrong spend. Buy this if you’ve confirmed your hardware likes StarTech compatible optics and you need LR reach with visibility via DDM; skip it if you haven’t validated support or if your links don’t genuinely need single‑mode 10km capability.

STARTECH
StarTech.com Cisco GLC-T Compatible SFP Module, 1000BASE-T, SFP to RJ45 Cat6/Cat5e, 1GE Gigabit Ethernet SFP, RJ-45 (Copper) 100m, Cisco Firepower, ASR920, IE2000, Mini GBIC Transceiver - Lifetime Warranty (GLCT10PKST) - SFP (mini-GBIC) transceiver module (equivalent to: Cisco GLC-T) - 1GbE - 1000Base-T - RJ-45 - up to 100 m (pack of 10)

STARTECH
StarTech.com MSA Uncoded Compatible SFP+ Module, 10GBASE-SR, 10GbE Multi Mode (MMF) Fiber Optic Transceiver, 10GE Gigabit Ethernet SFP+, LC Connector, 300m, 850nm, DDM, Mini GBIC Module - Lifetime Warranty (SFP10GBSRST) - SFP+ transceiver module - 10GbE - 10GBase-SR - LC multi-mode - up to 300 m - 850 nm

STARTECH
StarTech.com Cisco GLC-SX-MM Compatible SFP Module, 1000BASE-SX, 1GbE Multimode Fiber MMF Optic Transceiver, Gigabit Ethernet SFP, LC Connector, 550m, 850nm, Cisco IE3400, IE3300, IE3200 (SFPGLCSXMMST) - SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-SX - LC multi-mode - up to 550 m - 850 nm - for P/N: ET91000SFP2, ET91000SFP2C, IES101002SFP, MCM1110SFP, PEX1000SFP2

STARTECH
StarTech.com MSA Uncoded Compatible SFP+ Module, 10GBASE-LRM, 10GbE Multi Mode (MMF) Fiber Optic Transceiver, 10GE Gigabit Ethernet SFP+, LC Connector, 200m, 1310nm, DDM, Mini GBIC Module - Lifetime Warranty (SFP10GBLRMST) - SFP+ transceiver module - 10GbE - 10GBase-LRM - LC multi-mode - up to 220 m - 1310 nm