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Cisco, 1000BASE-SX, multimode, DOM, new

Cisco 1000BASE-SX SFP Transceiver, MMF, 850 nm, DOM (GLC-SX-MMD)

MPNGLC-SX-MMD

The Cisco GLC-SX-MMD is a 1000BASE-SX SFP for Gigabit Ethernet over multimode fibre at 850 nm, reaching 550 m on OM2 and up to 1 km on OM3, OM4 or OM5, with Digital Optical Monitoring. It is the standard choice for short Gigabit fibre links inside buildings and data centres.

Verified stock

USD 100per unit, excl. VAT and duties

100 plus available

TotalUSD 1,000
  • Exact part number GLC-SX-MMD. No edition substitution without your written approval.
  • Original manufacturer hardware. Condition, licence registration and warranty route confirmed on your invoice.
  • Typically 3 to 7 business days after cleared payment. DAP (Delivered at Place) by default, other terms on request.
  • Card (Visa, Mastercard) with 3-D Secure. Bank transfer against pro forma invoice. Card details are entered on Network International's secure payment page, never on our servers.
  • Full refund if we cannot approve or deliver your order. Payments are non-refundable if you cancel after paying.

Offer terms

Availability
Verified stock, 100 plus available
Unit price
USD 100 per unit
Minimum order
10 units
Ships from
Dubai or Singapore hub, confirmed on order
Dispatch
Typically 3 to 7 business days after cleared payment
Incoterm
DAP (Delivered at Place) by default, other terms on request
Tax and duties
Prices in USD, excluding UAE VAT, duties and import taxes. UAE deliveries add 5% VAT.
Payment
Card (Visa, Mastercard) with 3-D Secure; Bank transfer against pro forma invoice
Condition
New, factory sealed

Overview

GLC-SX-MMD complies with IEEE 802.3z 1000BASE-SX. Reach depends on the fibre: 220 m on FDDI-grade 62.5 µm, 275 m on OM1, 550 m on OM2 and 1,000 m on laser-optimised OM3, OM4 and OM5. It uses a duplex LC/PC connector and works in any Cisco Gigabit SFP port listed in the compatibility tables.

The D suffix marks the DOM version, reporting optical power, temperature, laser bias and voltage to the host to SFF-8472. It is rated for the extended temperature range of -5 to 85°C.

Typical uses

  • Access to distribution uplinks in a building
  • Server and storage Gigabit links
  • Firewall and router fibre handoffs

Specifications

Optical
StandardIEEE 802.3z 1000BASE-SX
Wavelength850 nm (770 to 860 nm)
Reach220 m FDDI 62.5 µm, 275 m OM1, 550 m OM2, 1 km OM3/OM4/OM5
Fibre typeMultimode only
ConnectorDuplex LC/PC
Transmit power-9.5 to -3 dBm
Receive power-17 to 0 dBm
Monitoring
DOMYes, SFF-8472
Environment
Operating temperature-5 to 85°C (EXT)
Physical
Dimensions (H x W x D)8.5 x 13.4 x 56.5 mm
Power
Power consumptionUp to 1 W

Source: manufacturer documentation, checked 22 October 2026. Tensor figures follow NVIDIA's stated basis; sparse figures are marked.

Edition and part numbers

Cisco rates the older GLC-SX-MM for the commercial range, while GLC-SX-MMD is rated for the extended range. GLC-SX-MM-RGD is the industrial rated version for -40 to 85°C, and SFP-1G-SX is a separate part that only works in 10G capable ports.

Delivery and warranty

Delivery. Typically 3 to 7 business days after cleared payment. DAP (Delivered at Place) by default, other terms on request. Shipments are insured to declared value and tracked. Delivery to every destination is subject to export and sanctions screening; see export compliance.

Warranty. Original manufacturer hardware. Condition, licence registration and warranty route confirmed on your invoice. Keep serial numbers with your invoice; our warranty and RMA process explains how claims are handled.

Cancellation. Payments are non-refundable if the buyer cancels after paying. If we cannot approve or deliver the order, we refund in full. See returns and cancellations.

Questions about the GLC-SX-MMD

How far will it run?
550 m on OM2, 275 m on OM1, 220 m on FDDI-grade 62.5 µm fibre and up to 1 km on OM3, OM4 or OM5.
Will it link with an older GLC-SX-MM?
Yes. Both are 1000BASE-SX modules to IEEE 802.3z, so they interoperate over the same multimode fibre.
How quickly can you confirm availability?
Listed availability shows when supply was last verified. For other quantities or destinations, send a request and we confirm supply and price in writing.

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