
3Com 1000Base-LX GBIC transceiver, single-mode fibre, SC connector, 10km reach.
The 3Com 3CGBIC92 is a 1000Base-LX GBIC transceiver module, providing a single-mode fibre Gigabit Ethernet uplink with an SC connector and a reach of up to 10km at 1310nm. It’s designed to slot into the GBIC-based expansion ports found across a range of 3Com switches and modules from the 4000 and 4900 switch families through to modular chassis line cards that use the GBIC form factor, giving those platforms a long-reach fibre option for building-to-building or campus backbone links where copper and multimode fibre don’t have the distance.
The 3CGBIC92 is 100% MSA (Multi-Source Agreement) compliant, so it operates identically to 3Com’s original transceiver and is hot-swappable in a live chassis without needing a switch reboot. Single-mode fibre and the 10km reach make it the right choice over the shorter-range 1000Base-SX GBIC (3CGBIC91) when a link needs to cross a longer distance than multimode fibre can reliably support.
It’s a good match for organisations maintaining existing 3Com GBIC-based switching hardware who need a matching long-reach fibre transceiver. Tech-Star (UK-based, shipped worldwide) checks every module before it ships. Get in touch to confirm compatibility with your switch or chassis.

| Platform | 3Com Switch 4210 |
|---|---|
| Manufacturer | 3Com |

| Platform | 3Com Switch 5500-EI |
|---|---|
| Manufacturer | 3Com |

| Platform | 3Com SuperStack 3 Switch 3300 |
|---|---|
| Manufacturer | 3Com |

| Platform | 3Com SuperStack 3 Switch 3824 Series |
|---|---|
| Manufacturer | 3Com |

| Platform | 3Com Switch 4500 PWR |
|---|---|
| Manufacturer | 3Com |

| Platform | 3Com NBX / VCX Business Telephone Platform |
|---|---|
| Manufacturer | 3Com |
| Key Features | 1000Base-LX single-mode fibre transceiver; SC connector; 10km reach at 1310nm; MSA-compliant, hot-swappable GBIC |
|---|---|
| Applications | Long-reach building-to-building and campus backbone fibre links; GBIC-slot uplinks on 3Com switches and chassis line cards |
| Compatibility | 3Com GBIC-slot switches and modular chassis line cards (4000/4900 series and later platforms); single-mode fibre cabling |
| Specifications | 1000Base-LX, 1Gbps; single-mode fibre; 1310nm wavelength; 10km maximum reach; SC connector; GBIC form factor |
| Platform | 3Com GBIC-slot switches |
| Manufacturer | 3Com |
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