Cisco SG500-28P-K9-NA 28 Ports Switch
If you need a large quantity of SG500-28P-K9-NA 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.

SG500-28P-K9-NA Cisco 28 Ports SG500-28P Ethernet Switch Refurbished

Availability: In Stock
Part Number#: SG500-28P-K9-NA
List Price was: $230.00
Your Price:
You Save: $10.00 (4% off)

3% Discount on Checkout

Short Description:
SG500-28P-K9-NA Small Business SG500-28P 28-Ports 10/100/1000 RJ-45 Power over Ethernet (PoE) Stackable, Manageable, Rack-mountable Switch with 2x Small Form-Factor Pluggable (SFP) Ports | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

More Information of this Item

The Cisco SG500-28P is a 28-port Ethernet switch designed for small and medium-sized businesses. It is part of Cisco's 500 Series of stackable switches, which are designed to provide a scalable and flexible network infrastructure for growing organizations.

The SG500-28P has 24 Gigabit Ethernet ports and 4 Gigabit Ethernet combo ports (with SFP and RJ-45 connectors) for connecting to other devices such as servers, workstations, and other switches. It also supports Power over Ethernet (PoE) on all of its ports, which allows it to power devices such as IP phones and wireless access points.

The switch supports advanced features such as Quality of Service (QoS), security, and network virtualization. It can also be managed and configured through a web-based interface or the Cisco Smartport Macro, which provides pre-configured templates for different types of network devices.

The SG500-28P-K9-NA model specifically has Layer 3 advanced feature set, including routing protocols and other advanced functionalities, while Layer 2 switch has less functionality comparing to Layer 3.

Performance and Reliability

The Cisco SG500-28P-K9-NA is a high-performance and reliable Ethernet switch that is designed for small and medium-sized businesses.

In terms of performance, the switch has a non-blocking switching fabric, which means that it can handle the full-wire speed on all ports simultaneously without any loss of performance. The switch also supports Quality of Service (QoS) and bandwidth control, allowing you to prioritize certain types of traffic and ensure that critical applications have the bandwidth they need.

In terms of reliability, the switch has several features to ensure that it stays up and running. It has a redundant power supply, which means that if the primary power supply fails, a secondary one will take over without any interruption in service. The switch also has advanced security features, such as 802.1X authentication and access control lists, to protect against unauthorized access and network attacks.

Additionally, the switch supports Cisco's Discovery Protocol and Link Layer Discovery Protocol (LLDP) which allows you to automatically discover and map your network, providing easier troubleshooting and management.

Interface Provided for Digital Workplace

The Cisco SG500-28P-K9-NA is a 28-port managed Ethernet switch from the Cisco Small Business SG500 series. It is designed for small businesses that are looking for a reliable and easy-to-use switch to power their digital workplace.

The switch provides 28 Gigabit Ethernet ports (24 of which are PoE-enabled) which can be used to connect devices such as computers, servers, and IP phones. Additionally, the switch supports Power over Ethernet (PoE) which allows the devices connected to it to receive power via the Ethernet cable, eliminating the need for an additional power source.

The model also supports advanced features such as Quality of Service (QoS) which allows for prioritization of different types of traffic, and access control lists (ACLs) which can be used to secure the network. The switch has a web-based management interface that allows for easy configuration and monitoring of the switch.

It also offers many security features like IPv6, SSH/SSL, ACLs, and VLANs which can provide added layer of security to your network infrastructure.

In summary the model is designed to provide a cost-effective, high-performance and feature-rich network solution for small businesses, which offer many advance features like PoE,QoS,ACLs, and Security features to help in building secure, reliable and high-performance networks.

General Information about this Cisco SG500-28P-K9-NA

  • Manufacturer: Cisco
  • Model Number or SKU# SG500-28P-K9-NA
  • Product Series: 500
  • Product Type: Ethernet Switch

Interfaces / Ports for Ethernet Switch

  • Total Number of Network Ports 24
  • Token Ring Port No
  • LRE Port No
  • Uplink Port No
  • Bypass No
  • Modular No
  • Management Port Yes
  • USB No
  • Number of PoE (RJ-45) Ports 24
  • Stack Port Yes
  • Number of Network (RJ-45) Ports 24

Performance for Cisco 28 Ports Switch

  • Media Type Supported Twisted Pair
  • Twisted Pair Cable Standard Category 5
  • Ethernet Technology Fast Ethernet
  • Ethernet Technology Gigabit Ethernet
  • Network Technology 10/100/1000Base-T

I/O Expansions of Manageable Switch

  • Number of Total Expansion Slots 4
  • Number of SFP Slots 4

Network & Communication

  • Layer Supported 2

Management & Protocols

  • Manageable Yes
  • Management-
  • DHCP
  • CLI
  • GUI
  • VLAN
  • QoS
  • SNMP


  • Flow control, layer 2 switching, VLAN support, IPv6 support, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP) support, Multiple Spanning Tree Protocol (MSTP) support, Access Control List (ACL) support, Quality of Service (QoS), reset button, LACP support, Energy Efficient Ethernet, Dynamic VLAN Support (GVRP)

Compliant Standards

  • IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3af, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3at, IEEE 802.3az


  • Standard Memory 256 MB
  • Flash Memory 32 MB

Power Description

  • PoE (RJ-45) Port Yes
  • Input Voltage 110 V AC
  • Input Voltage 220 V AC
  • Power Source Power Supply
  • Redundant Power Supply No

Dimensions & Weight

  • Height : 1.7 Inch
  • Width : 17.3 Inch
  • Depth : 10.1 Inch
  • Weight : 8.71 LBS

Environmental Parameters

  • Min Operating Temperature: 32 °F
  • Max Operating Temperature: 104 °F
  • Humidity Range Operating: 10 - 90% (non-condensing)
  • Min Storage Temperature: -4 °F
  • Max Storage Temperature: 158 °F
  • Humidity Range Storage :10 - 90% (non-condensing)
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

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.

Here, you can check more available conditions of your desired product SG500-28P-K9-NA 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.