GLC-SX-MMD — Cisco 1000BASE-SX SFP Transceiver, 850nm, MMF, 550m, LC Duplex, DOM
MPN: GLC-SX-MMD|By: Cisco

Starting from
$345
Indicative — final pricing confirmed with your quote.
In Stockships worldwide
- Condition:
- New — authorized channel
- Warranty:
- Full manufacturer warranty
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Bulk order? Request volume pricing
Product overview
Cisco lists GLC-SX-MMD as a 1000BASE-SX SFP transceiver, 850nm, MMF, 550m, LC duplex, DOM. Direct-attach copper is cheaper and lower latency than optics but is limited by length and by what each switch will accept. Tell us the two endpoints and we will say which of the two is right for the run.
Ask for the datasheet and firmware notes with the quote; we would rather you check our claim than take it.
Featuring
- Manufacturer
- Cisco
Interfaces / Ports
- Connector
- LC
Physical characteristics
- Transceiver Type
- SX
- Product Type
- Transceivers & Cables
- Expedited shipping options are available — rates confirmed with your quote.
- Purchase orders accepted from qualified institutions.
- Compatibility is validated against your server platform before dispatch. Send us the model and we will confirm support.
Specifications for GLC-SX-MMD as published by Cisco. Where a value is absent it is because we could not verify it, not because it does not exist — ask and we will check.
Where the Cisco GLC-SX-MMD is deployed
- Sourcing GLC-SX-MMD against a build sheet that names it explicitly
- Bringing up a new link between two existing switches
- Cabling a new rack into an installed fabric
Who this part is for
- MSPs holding spare optics against a customer SLA
- Procurement buying optics in quantity for a scheduled build
- Integrators supplying the passive layer with a switch order
What you get ordering this from us
Ordered by part number
Quoted and supplied against GLC-SX-MMD specifically, so what arrives is what your build sheet asks for.
No substitutions without asking
If we cannot supply the exact code we tell you what we can supply and why, rather than shipping an equivalent and letting you find out.
Volume pricing
The listed price is per unit; tiered pricing applies at quantity and purchase orders are accepted.
Questions buyers ask about this part
- Is GLC-SX-MMD genuine and is the warranty intact?
- Yes. Supplied new and unopened, so the manufacturer warranty and firmware update path stay supported. No grey-market stock and no refurbished units sold as new.
- Will GLC-SX-MMD work in my server?
- Tell us the switch at both ends of the link. Optics are frequently vendor-coded, so a module that is electrically correct can still refuse to come up; we confirm the coding for both ends before it ships.
- Do you accept purchase orders and quote at volume?
- Yes. Purchase orders are accepted from qualified organisations, net terms are available on approval, and tiered pricing applies at quantity. Tell us how many you need.
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Specifying a system, not just the part?
Optics and cabling are part of the fabric spec on a cluster build — both ends and the switch have to agree.
