# SFP Transceiver Cisco GLC-SX-MMD-RFB 1000Base-SX 850nm, multimode fiber, 1 Gbps

**URL:** https://aio.lv/en/product--cisco-glc-sx-mmd-rfb--10841740
**Data updated:** 2026-01-12 19:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** Cisco
**Manufacturer code:** GLC-SX-MMD-RFB
**EAN:** 5712505624692
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 17.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cisco-glc-sx-mmd-rfb--10841740

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Cisco GLC-SX-MMD-RFB is an SFP transceiver module for 1000Base-SX applications using 850 nm wavelength over multimode fiber. It provides 1 Gbps Ethernet connectivity for switches and routers with SFP ports. Suitable for short-reach fiber links in enterprise networks, data centers and campus environments to extend network segments and enable high-speed fiber uplinks.

## Long description

Cisco GLC-SX-MMD-RFB is an SFP transceiver module designed for 1000Base-SX fiber optic applications. Operating at an 850 nm wavelength over multimode fiber, this module delivers 1 Gbps Ethernet connectivity for compatible switches and routers with SFP ports. It is intended for short-reach fiber links in enterprise networks, data centers and campus environments to extend network segments and establish high-speed fiber uplinks.
Advantages
The Cisco GLC-SX-MMD-RFB provides standardized SFP form-factor compatibility, hot-pluggable installation and interoperability with devices that support Cisco SFP modules. The module supports 1 Gbps data rates and 850 nm multimode transmission suitable for short-distance links, enabling simple integration into existing fiber infrastructures. Its compliance with 1000Base-SX optical specifications ensures predictable performance for uplink and server connections.
Suitable for
 Short-reach multimode fiber links within enterprise LANs
 Data center uplinks and server connections requiring 1 Gbps
 Campus backbone segments between buildings over multimode fiber
 Replacement or spare SFP modules for switches and routers with SFP ports
Key specifications
 Brand: Cisco
 Model / MPN: GLC-SX-MMD-RFB
 Standard: 1000Base-SX
 Wavelength: 850 nm
 Fiber type: Multimode fiber (MMF)
 Data rate: 1 Gbps
 Form factor: SFP, hot-pluggable
 EAN: 5712505624692
How to use
Insert the Cisco GLC-SX-MMD-RFB module into an SFP slot on a compatible switch or router while the device is powered on or off (hot-pluggable). Connect multimode fiber patch cables with appropriate LC connectors to the transceiver ports, ensuring correct duplex orientation. Verify link status and negotiate 1 Gbps operation through the network device management interface. If necessary, consult the device documentation for any module enablement or configuration settings required by the host hardware.
Usage recommendations
Use the module with multimode fiber of appropriate grade (e.g., OM1/OM2/OM3/OM4 as supported by the network design) and maintain correct polarity and connector cleanliness. For reliable links, adhere to recommended maximum reach for 850 nm 1000Base-SX and perform optical power and loss checks during installation. Replace the dust caps when the module is not in use and store spares in anti-static packaging.

## FAQ

### How much does the SFP Transceiver Cisco GLC-SX-MMD-RFB cost, and is it available for purchase?

The price is 21.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 09.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Cisco products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Cisco service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

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