- VoIP & Phone Systems
VoIP Number Porting: How to Keep Your Business Phone Numbers
18 Mar, 2026
Shop›Switch Tranceivers (GBIC/SFP)›StarTech.com Cisco GLC-LH-SMD Compatible SFP Transceiver Module - 1000BASE-LH~Cisco GLC-LH-SMD Compatible SFP Module - 1000BASE-LH - 1GbE Single Mode Fiber SMF Optic Transceiver - 1GE Gigabit Ethernet SFP - LC 20km - 1310nm - DDM Cisco Firepower, IE2000, IE4000
StarTech.com Cisco GLC-LH-SMD Compatible SFP Transceiver Module - 1000BASE-LH~Cisco GLC-LH-SMD Compatible SFP Module - 1000BASE-LH - 1GbE Single Mode Fiber SMF Optic Transceiver - 1GE Gigabit Ethernet SFP - LC 20km - 1310nm - DDM Cisco Firepower, IE2000, IE4000
£40.62
£48.74 inc. VAT
Out of Stock(0)MPN: SFPG1320C
🚚 Next-day delivery £4.95
Quantity:1
1
2
3
4
5
6
7
8
9
10+
Key Features
StarTech.com Cisco GLC-LH-SMD Compatible SFP Module 1000BASE-LH 1GbE Single Mode (SMF) Fiber SMF Optic Transceiver 1GE Gigabit Ethernet SFP LC 20km, 1310nm, DDM, Cisco Firepower, IE2000
Lifetime Warranty (SFPG1320C)
SFP (mini-GBIC) transceiver module
1GbE
1000Base-LH
LC single-mode
up to 20 km
1310 nm
Product Overview
AI-generated summary
This StarTech 1GbE SFP (single-mode, long-haul LC, ~20km class, with DDM) is the sort of “gets the job done” optic you buy when you want working fibre uplinks without paying the Cisco-brand tax. At **£40.68 ex-VAT** it’s priced like a sensible B2B consumable—especially if you already know the link budget is fine and you’re just trying to keep downtime low. DDM is a nice practical inclusion: it helps you spot a failing module or marginal fibre before the link starts flapping.
That said, I wouldn’t call it a universal recommendation. These Cisco-compatibility labelled optics usually work best with the exact platforms they’re intended for (you’ve mentioned Firepower/IE series), and compatibility can be picky depending on firmware/hardware generation. Also, because it’s a **1GbE** module, don’t buy it if you’re really trying to modernise bandwidth—you’ll just be paying the optics cost while capping yourself at gigabit. If you’re matching it to a supported Cisco environment and you need single-mode for longer distances, it’s good value; if you need broad “plug-and-play across anything” flexibility, or you’re unsure about platform support, spend the extra time validating first.
Specifications
Performance
SFP transceiver typeFiber optic
Maximum data transfer rate1250 Mbit/s
Interface typeSFP
Single-mode fiber (SMF) supportedY
Multi-mode fiber (MMF) supportedN
Features
Product colourSilver
Hot-swapY
Mean time between failures (MTBF)2722277 h
Brand compatibilityCisco
Compatible productsGLC-LH-SMD
Power
Power consumption (typical)1 W
Certificates
Compliance certificatesRoHS
CertificationCE, FCC, UL, REACH
Operational conditions
Operating temperature (T-T)0 - 70 °C
Storage temperature (T-T)-40 - 85 °C
Operating relative humidity (H-H)30 - 70 %
Weight & dimensions
Width12 mm
Depth60 mm
Height10 mm
Weight20 g
Packaging content
Quantity per pack1 pc(s)
Packaging data
Package width118 mm
Package depth92 mm
Package height33 mm
Package weight48 g
Similar Items
STARTECH
StarTech.com HPE 455886-B21 Compatible SFP+ Module, 10GBASE-LR, 10GbE Single Mode (SMF) Fiber Optic Transceiver, LC 10km, 1310nm DDM, HPE BladeSystem 562SFP+ 560SFP+, Mini GBIC Transceiver - Lifetime Warranty (455886-B21-ST) - SFP+ transceiver module (equivalent to: HP 455886-B21) - 10GbE - 10GBase-LR - LC single-mode - up to 10 km - 1310 nm - for HPE SimpliVity 380 Gen10 Node, 380 Gen9 Node, Virtual Connect Flex-10
£55.30
£66.36 inc. VAT
STARTECH
StarTech.com Arista Networks QSFP-40G-SR4 Compatible QSFP+ Module, 40GBASE-SR4, 40GbE Multimode Fiber MMF Optic Transceiver, 40GE Gigabit Ethernet QSFP+, MPO Connector, 150m, 850nm, DDM - Lifetime Warranty (QSFP-40G-SR4-AR-ST) - QSFP+ transceiver module (equivalent to: Arista Networks QSFP-40G-SR4) - 40GbE - 40GBASE-SR4 - MPO multi-mode - up to 150 m - 850 nm
£32.10
£38.52 inc. VAT
STARTECH
StarTech.com HPE J4859C Compatible SFP Module, 1000BASE-LX, 1GbE Single Mode (SMF)/Multi Mode MMF Fiber Optic Transceiver, LC Connector, 10km, 1310nm, DDM, HPE 1400, 1700, 1820, Mini GBIC - Lifetime Warranty (J4859CST) - SFP (mini-GBIC) transceiver module (equivalent to: HP J4859C) - 1GbE - 1000Base-LX - LC - up to 10 km - 1310 nm - for HPE 1700, 2610, 93XX, Switch XL 10/100/1000, HPE Aruba 2530, 2930F 24, 2930F 48, 5406
£40.74
£48.89 inc. VAT
STARTECH
StarTech.com Cisco QSFP-40G-CSR4 Compatible QSFP+ Module, 40GBASE-SR4, 40GbE Multimode Fiber MMF Optic Transceiver, 40GE Gigabit Ethernet QSFP+ MPO 300m, 850nm DDM, Cisco Firepower ASR9000 - Lifetime Warranty (QSFP-40G-CSR4-ST) - QSFP+ transceiver module (equivalent to: Cisco QSFP-40G-CSR4) - 40GbE - 40GBASE-SR4 - MPO multi-mode - up to 400 m - 850 nm
£35.99
£43.19 inc. VAT