- Network Admin
What is Network Access Control (NAC)?
25 Oct, 2025




£45.89 inc. VAT
AI-generated summary
For £38.29 ex-VAT, this is a pretty safe buy **if** you’re only trying to get a Cisco Meraki SFP slot lit up with a **10km single‑mode LC** link and you don’t want to pay “brand tax”. In day-to-day reseller life, these StarTech-compatible optics are usually fine for normal patching and ongoing connectivity—as long as your existing port expects SFP optics and your fibre run is genuinely in that range. DDM support is a nice touch too because it makes troubleshooting less of a guessing game when something looks “weird” on the network.
That said, I’d be a bit cautious about using these as a long-term “mix and match” strategy across multiple critical sites. Compatible modules can be perfectly stable, but they can also be more sensitive to marginal optics/attenuation, connector quality, or transceiver compatibility quirks than the original matched part. **Buy this if** you’ve got a straightforward single‑mode 1GbE link requirement (10km, LC) and you’re comfortable that your fibre plant is solid. **Avoid it if** you’re deploying for a mission-critical link with no margin, or you’ve had prior issues with optics flapping/compatibility—then the extra cost of genuine Meraki-branded modules is often worth it for peace of mind.

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 HPE J9151A Compatible SFP+ Module, 10GBASE-BX, 10 Gigabit Ethernet Bi-Directional (BiDi) Fiber Single Strand SFP+, LC 10km, HPE 2920, 2910al, 3500yl, Mini GBIC Transceiver - Lifetime Warranty (J9151A-BX-U-ST) - SFP+ transceiver module (equivalent to: HP J9151A-BX-U) - 10GbE - 10GBase-BX - LC single-mode - up to 10 km - 1270 nm / 1330 nm - for HPE 6120, 6600, SFP+ zl, HPE Aruba 2930F 24, 2930F 48, 5406

Dell
Dell - Kit - SFP+ transceiver module - 10GbE - 10GBase-SR - up to 300 m - 850 nm - for Networking N1148, PowerSwitch S4112, S5212, S5232, S5296, Networking N3024, N3048, X1052

STARTECH
StarTech.com Cisco QSFP-40G-SR4-S Compatible QSFP+ Module, 40GBASE-SR4, 40GbE Multimode Fiber MMF Optic Transceiver, 40GE Gigabit Ethernet QSFP+ MPO 100m, 850nm DDM, Cisco Firepower, - Lifetime Warranty (QSFP-40G-SR4-S-ST) - QSFP+ transceiver module (equivalent to: Cisco QSFP-40G-SR4-S) - 40GbE - 40GBASE-SR4 - MPO multi-mode - up to 100 m - 850 nm