Cisco WS-X4920-GB-RJ45 Expansion Module
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Why WS-X4920-GB-RJ45 Cisco Catalyst 20 Ports is the best?

Availability: In Stock
Part Number#: WS-X4920-GB-RJ45
3% Discount on Checkout

Short Description:
WS-X4920-GB-RJ45 Catalyst 20 Ports 1 Gigabytes Per Second (GBPS) Gigabit Ethernet Twisted Pair 10/100/100base-T Data Networking Half Card Expansion Module | Made by Cisco | Refurbished

Interface Types of This Product: Expansion Module 20 Port

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
We are giving specifications below, why one should consider procuring Cisco 20 Port Expansion Module Networking features, a general overview, description, performance specification, relevant images, a competitive price infographic, and technical information about the WS-X4920-GB-RJ45 model with compatibility.

Detail Specifications

The WS-X4920-GB-RJ45 is a 20-port expansion module for the Cisco Catalyst 4900M switch. It is a half-card module that can be inserted into the switch to add additional ports. The module has 20 Gigabit Ethernet ports that can be used to connect devices to the switch, such as servers, workstations, and other network devices.

The module also supports advanced features such as Quality of Service (QoS) and Link Aggregation Control Protocol (LACP) to ensure that network traffic is properly managed and prioritized. It also supports jumbo frames (up to 9216 bytes) for increased performance.

The module is designed for use in data center and enterprise environments where high-speed, reliable connectivity is required. It provides a cost-effective way to increase the port density of the switch and to add advanced features to support the needs of the network.

Performance and Reliability

The model Cisco Catalyst 4900M 20-ports half card expansion module is designed to provide high performance and reliability for the Cisco Catalyst 4900M switch.

The module provides an additional 20 Gigabit Ethernet ports for the switch, allowing for more devices to be connected to the network. The ports on the module use RJ-45 connectors and support both 10/100/1000Mbps speeds. This allows for fast and efficient data transfer between devices connected to the network.

The module is also designed for high reliability. It is hot-swappable, which means that it can be removed and replaced without having to power off the switch. This allows for minimal downtime and easy maintenance. Additionally, the module supports a variety of advanced features such as quality of service (QoS) and security features to help ensure that network traffic is properly prioritized and that the network is protected from potential threats.

Cisco Catalyst 4900M switch is known for its high performance and reliability. The WS-X4920-GB-RJ45 expansion module is fully compatible with the switch, and it's been tested and certified by Cisco to meet the necessary standards. This ensures that the module will continue to function properly, even under difficult conditions.

Interface Provided for Digital Workplace

The WS-X4920-GB-RJ45 Cisco Catalyst 4900M 20-ports half card expansion module provides a Gigabit Ethernet interface for the digital workplace. This means that it provides a high-speed, reliable connection for devices in the digital workplace such as computers, servers, and other networking equipment.

The module has 20 ports, each of which use RJ-45 connectors and support both 10/100/1000Mbps speeds. This allows for fast and reliable data transfer between devices connected to the network, ensuring that employees in the digital workplace have access to the resources they need to be productive.

The module also supports advanced features such as quality of service (QoS) and security features. QoS allows for the prioritization of network traffic, which can be particularly useful in a digital workplace where different types of traffic (such as voice, video, and data) may need to be handled differently. Security features can help to protect the network from potential threats, ensuring that sensitive data remains protected.

The module is hot-swappable, which means that it can be removed and replaced without having to power off the switch, minimizing downtime, and it's easy to maintain.

General Information about this Cisco WS-X4920-GB-RJ45

  • Manufacturer: Cisco
  • Part Number or SKU# WS-X4920-GB-RJ45
  • Product Type: Expansion Module

Technical Information of 20 Ports Module

  • Application/Usage: Data Networking
  • Form Factor: Plug-in module

Interfaces/Ports for Expansion Module

Media & Performance

  • Media Type Supported: Twisted Pair
  • Data Transfer Rate: 1 GBPS


  • Connectivity Technology: Wired
  • Cabling Type: Ethernet 10Base-T, Ethernet 100Base-TX, Ethernet 1000Base-T
  • Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet
  • Data Transfer Rate: 1 GBPS
  • Status Indicators: Port status, status


  • Full duplex capability, half duplex mode

Expansion / Connectivity

  • Interfaces: 20 x 1000Base-T - RJ-45
  • Compatible Slots: 1 x expansion slot

Dimensions & Weight

  • Height: 1.9 Inch
  • Width: 7.4 Inch
  • Depth: 8.2 Inch
  • Weight (Approximate): 1.50 Lbs


  • Compatibility: Cisco Catalyst 4900 Series Switches

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.

For all your expansion module needs, we've got you covered with high-performance devices that increase functional capability and ease business processes.

You can talk to any of our staff and consult on what would be the best way forward when getting an expansion module to complement and enhance existing infrastructure, meet your immediate and future needs.

We have hardware level 12 with firmware 3.0 or higher modules that allow for the installation of up to 14 expansion modules below the base module for resilient performance. Expansion modules connect to the base module using USB Type-A connectors. That's not all, we have hardware level 11 and lower that supports up to 9 expansion modules.

With an expansion module, you get additional cartridge storage as well as tape drive capacity. We have expansion modules that contain up to two drives and two power supplies. You can choose to have the expansion module with tape drives and power supply installed so that it makes setup easier from your end. Expansion modules will need a power supply only if you install a tape drive in it. A single power supply can actually power two drives. However, you can add a second power supply for redundancy purposes. Without a tape drive, the expansion module is powered via the USB cable connected to the base module.

Expansion modules require 2U rack space and will be shipped with the necessary mounting hardware used to secure it to the rack.

The top features of the expansion modules we've listed include:

  • High-resolution LCD screens of up to 5" with backlight for a vibrant visual experience and ease of use. The expansion modules have programmable line keys ensuring that the interface is intuitive and interactive.
  • Straightforward setup to facilitate easy installation.
  • Availability of a wide range of custom configurations
  • Advanced call handling and contact management capabilities to help increase productivity.
  • XML browser functionality
  • Compatibility across systems which helps to leverage on existing IT infrastructure investment. All the expansion modules we've made available will help to enhance your existing desktop solutions.
  • Seamless fusion with planar and fiber technology
  • Compatibility with phone models such as SIP-T27P and SIP-T29G helping to expand functionality.
  • Availability of color icons that enhance the visual experience for users. There are color-coded independent actionable control keys that facilitate fast switching between pages.
  • Ability to link together a maximum of six phone systems and up to two expansion modules from a single host phone.
  • Support for up to 3 modules on a daisy-chain
  • Reduced excess loss and PDL
  • Support for advanced call functions including call forwarding, call transfers, multi-person conferencing, call pickup, LDAP, speed dial, and BFL list.
  • Shipped with a stand that has two adjustable angles

You can find almost every module option in our catalog, we have modules with different numbers of ports, from 1-port options to 50- and 90-port options, you can also check out our 20 Gigabit, 48 Gigabit, and 100 Gigabit expansion modules. Browse through our categories to find the best option for your needs.

All expansion modules make for ideal solutions for administrative assistants, receptionists, and contact center employees due to the ability to easily manage large call volumes and to monitor a large number of contacts.

Here, you can check more available conditions of your desired product WS-X4920-GB-RJ45 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.


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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:

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

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