Cisco GLC-SX-MMD SFP Transceiver Module
If you need a large quantity of GLC-SX-MMD product - call us at +1 (718) 766 5269 or request a quote at live chat and our sales manager will contact you shortly.
Looking for assistance? Connect with one of our experts
FREE Shipping. We are accepting NET 30 Days Purchase Orders. Get a decision in seconds, without affecting your credit.

Cisco GLC-SX-MMD 1000Base SX Multi Mode Fiber Duplex SFP Refurbished

Availability: In Stock
Part Number#: GLC-SX-MMD
List Price was: $61.54
Your Price:
You Save: $45.54 (74% off)

3% Discount on Checkout

Short Description:
GLC-SX-MMD 1000Base-SX Multi Mode Fiber 550m 850nm Duplex LC Connector Small Form-Factor Pluggable (SFP) (Mini-GBIC) Transceiver Module | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Power management in Cisco Transceiver Module

The Cisco GLC-SX-MMD 1000Base SX SFP 1 Port transceiver module is designed to provide high-speed connectivity over multimode fiber optic cables in networking equipment such as routers and switches. Power management is an important aspect of this module's design, as it helps to ensure that the module operates reliably and efficiently.

Here are some key details about power management in the Cisco GLC-SX-MMD module:

  • Power consumption: The Cisco GLC-SX-MMD module has a maximum power consumption of 1 watt. This low power consumption is important because it helps to reduce heat dissipation, which can be a significant issue in networking equipment.
  • Power supply voltage: The module requires a power supply voltage between 3.13V and 3.47V. This voltage range is specified to ensure that the module operates within safe and reliable limits.
  • Power saving features: The module includes a number of power saving features that help to reduce power consumption when the module is not in use. For example, the module supports the IEEE 802.3az Energy Efficient Ethernet (EEE) standard, which allows network devices to enter a low-power sleep mode when there is no network traffic.
  • Digital diagnostics monitoring: The module includes digital diagnostics monitoring (DDM) functionality, which provides detailed information about power consumption, temperature, and other operating parameters. This information can be used to optimize power management and to monitor the health of the module.
  • Overload protection: The module includes overload protection circuitry to prevent damage to the module in the event of excessive power consumption. This circuitry can detect when the module is drawing too much power and will automatically shut down the module to prevent damage.

Design Considerations of SFP Transceiver

The Cisco GLC-SX-MMD is a small form-factor pluggable (SFP) transceiver module that supports Gigabit Ethernet data rates over multi-mode fiber optic cables. Here are some design considerations of this module:

  • Compatibility: The GLC-SX-MMD SFP module is designed to be compatible with a wide range of Cisco networking equipment, including routers, switches, and wireless access points. When selecting an SFP module, it's important to ensure that it's compatible with your equipment to ensure proper operation.
  • Fiber Type: The GLC-SX-MMD module supports multi-mode fiber optic cables with a maximum range of 550 meters. When designing a fiber optic network, it's important to select the appropriate fiber type based on the required data rate, distance, and other factors.
  • Connector Type: The GLC-SX-MMD module features LC duplex connectors, which are small and easy to use. LC connectors are commonly used in data center environments where space is at a premium.
  • Wavelength: The GLC-SX-MMD module operates at a wavelength of 850 nanometers (nm), which is the standard for multi-mode fiber optic cables. When designing a fiber optic network, it's important to select the appropriate wavelength based on the fiber type and other factors.
  • Power Consumption: The GLC-SX-MMD module has a maximum power consumption of 1 watt, which is relatively low compared to other SFP modules. This is an important consideration when designing a network with multiple SFP modules, as the total power consumption can add up quickly.
  • Hot-Swappable: The GLC-SX-MMD module is hot-swappable, which means it can be inserted or removed from a running network device without shutting down the device. This is an important feature for networks that require high availability and minimal downtime.

The importance of testing and validation

Testing and validation are critical processes in ensuring the functionality and reliability of the Cisco GLC-SX-MMD 1000Base SX Multi-Mode Fiber Duplex SFP Transceiver Module. This module is designed to provide high-speed data transmission over a multi-mode optical fiber network, making it an essential component in a wide range of networking applications.

Testing and validation are important for several reasons:

  • Performance: Testing and validation ensure that the module performs as expected, meeting the specified parameters for data transfer rates, signal strength, and other performance metrics.
  • Compatibility: Testing and validation ensure that the module is compatible with other networking equipment, such as switches, routers, and servers.
  • Reliability: Testing and validation help identify any potential issues or defects that could impact the module's reliability, ensuring that it operates consistently over time.
  • Safety: Testing and validation also help ensure that the module meets safety standards and does not pose any risk to users or the network.

General Information about this Cisco GLC-SX-MMD

Technical Information for 1000Base-SX Transceiver Module

  • Application/Usage: Optical Network
  • Application/Usage: Data Networking
  • Transceiver Type: SFP (mini-GBIC)
  • Connectivity Technology: Wired
  • Form Factor: Plug-in module

Interfaces/Ports of SFP (mini-GBIC)Transceiver

  • Total Number of Ports: 1
  • Connector Type: LC/PC
  • Interfaces/Ports Details: 1 x LC/PC Duplex 1000Base-SX Network

Media & Performance

  • Media Type Supported: Optical Fiber
  • Fiber Optic Cable Standard: 62.5 µm, 50 µm
  • Fiber Mode Supported: Multi-mode
  • Ethernet Technology: Gigabit Ethernet
  • Network Technology: 1000Base-SX
  • Compatible Networks: 1000 MBPS (1 GBPS)
  • DDM: Yes
  • Fiber Operating Mode: Full-Duplex
  • Max Transfer Distance: 550 M (1804 ft)
  • Maximum Data Transfer Rate: 1.25 GBPS
  • MTBF: 3,381,761 Hours
  • Wavelength: 850NM

Power Description

  • Power Consumption (In Watts): 1 W

Environmental Parameters

  • Min Operating Temperature: 32 °F
  • Max Operating Temperature: 158 °F
  • Humidity Range Operating: 5 - 95%

Dimensions & Weight

  • Form Factor: Hot-swappable
  • Height: 0.3 Inch
  • Width: 0.5 Inch
  • Depth: 2.2 Inch
  • Weight (Approximate): 0.16 Lbs


  • Multisource Agreement Compliant
  • Cisco ME 3400
  • Catalyst Express 500
  • Catalyst Express 520
  • Cisco ME 4900 Series
  • Catalyst 2960-S Series
  • Catalyst 2960 series
  • Catalyst 2950 Series
  • Catalyst 2970 series
  • Catalyst 3550 Series
  • Catalyst 3560-E Series
  • Catalyst 3560-X Series
  • Catalyst 3750 series
  • Catalyst 3750-E Series
  • Catalyst 3750-X Series
  • Catalyst 3560 Series
  • Cisco IE3010 series
  • Catalyst 4500 series
  • Catalyst 4900 Series
  • Catalyst 6500 series
  • Cisco Catalyst 2350 Series
  • Cisco Catalyst 2360 Series
  • Cisco Catalyst 3000 and 3100 Blade Switches
  • Cisco Nexus 7000 Series
  • Cisco uBR7200 Series
  • Cisco 7300 Series Router
  • Cisco 7600 Series Router
  • Cisco uBR10000 Series Router
  • Cisco MWR 2941 Mobile Wireless Routers

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

Building a fibre-optic network calls for a lot of planning and consideration of many factors. Transceivers are part of the many devices used to build optical fibre systems. A transceiver serves the combined roles of a transmitter and a receiver in that it transmits and receives signals. They are most common in communication equipment such as cellular phones, cordless telephone sets, and radios. Small form factors are required as networks become dense and space is limited, which sees transceivers included in chipsets.

In local area networks (LAN), a transceiver is used to connect a computer to printers and other devices on the network. Usually, the transceiver is integrated into the Network Interface Card (NIC)

Typical Roles of a Transceiver

  • Used to convert frequencies from IF to RF.
  • Widespread use in wireless communication to transmit data – voice, data, and video.
  • RF transceivers are used in communication devices to support radio and TV signal transmission, digital signals transmission, and satellite communication.
  • Collision detection – detection of simultaneous signals on the network.
  • Transceivers can be deployed to provide a jabber function to interrupt the transmission of long data stream outputs.

Look no further for all types of transceivers including fibre optic transceivers, wireless transceivers, Ethernet transceivers, and RF transceivers. All these transceivers have different characteristics and support full-duplex communication, but the principle behind their work remains the same. Different types of transceivers will have varying numbers of ports used in the transceiver networking connections.

RF Transceivers: these devices are used to transmit video or voice data over a wireless medium. Commonly used for satellite communication, radio transmission, and ITE/WiMax/WLAN networks. The radio transceiver works by silencing the receiver when it is transmitting. There is an electronic switch that facilitates the connection of both the receiver and transmitter on the same antenna. The switch protects the receiver from damage that may be caused by the transmitter output.

Fiber Optic Transceivers: Also referred to as optical modules or fibre optical transceivers. Used to transmit data in fibre optic technology. The network must also have electronic components to encode or decode data into light signals.

Ethernet Transceivers: Basically used to connect electronic devices in a network so that they are able to transmit and receive data. It is also referred to as a media access unit (MAU). The best application of these transceivers is in the specification of IEEE 802.3 and Ethernet. Ethernet transceivers will detect a collision, provide Ethernet interface processing, convert digital data, and provide access to the network.

Wireless Transceivers: Wireless transceivers are a fundamental component necessary for data delivery in wireless networks. These transceivers have two layers. The physical layer has a baseband processor and RF front end. The processor converts a bitstream to a collection symbol flow for data transmission. The second layer is a MAC layer for link traffic control in contacting wireless links, improving data throughput, and preventing collisions.

We guarantee our customers high quality and reliability for all our transceiver networking solutions, irrespective of the type and size of your network.

Here, you can check more available conditions of your desired product GLC-SX-MMD at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


Please choose your location for calculate shipping cost.


ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.


Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.

UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
  • We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
  • If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
  • You can estimate the shipping cost from the products detail page, also available on the checkout page
  • The shipping cost depends on box dimensions, weight, and zip/postal code
  • To get a FedEx® delivery service you need to mention it on the checkout page notebox.
  • For urgent shipments, please contact our customer service.
  • Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.