BLACK BOX 

BLACK BOX LGB5028A-R3 GIGABIT MANAGED SWITCH 28 PORT

Mfg Part Number:  LGB5028A-R3  
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Price: $945.73
Quantity:
In Stock: 28
Last Updated: Mar 28, 2026
No Sales Tax except these states
, PO and Wire.

This high-performance switch uses LACP and IEEE 1588v2 to optimize network operations.

LACP is used in high-availability and performance environments, such as data centers or enterprise networks, to aggregate links between switches, servers, or routers. It simplifies management by treating multiple links as one, and improves resilience by avoiding single points of failure. LACP scales network capacity without upgrading individual links.

IEEE 1588v2, also known as Precision Time Protocol (PTP), is a standard protocol used to precisely synchronize clocks across a network. This is important in applications that require highly accurate timing, such as telecommunications, industrial automation, power systems, and financial services.

Fully manageable

The switch is fully managed, supporting SNMP version 1, 2c, and 3. The embedded RMON software agents support RMON groups 1 (history), 2 (statistics), 3 (alarms), and 9 (events). The integral Web server enables Web-based management via a Web browser. This GUI interface enables switch configuration, system dashboard, maintenance, and monitoring, and includes a wide range of management and support features.

Support for VLAN and QoS

Support for up to four simultaneous VLANs segments traffic with port-based, 802.1Q tag-based, or MAC-based VLANs. 802.1p Layer 2 quality of service (QoS) prioritizes time-sensitive applications such as VoIP and video.

Secure

Enterprise-class security features include 802.1X port-based network access control to authenticate devices connecting to your network. The switch also supports SNMPv3 cryptographic security, SSH, and SSL. Plus, you can set up a guest VLAN that enables visitors to access the Internet without also giving them access to the corporate network.

Green

IEEE 802.3az energy-efficient Ethernet scales down power consumption during periods of low data activity, saving 50% energy. Cable length detection adjusts signal strength to the cable length, reducing power consumption on shorter cable runs.

Main Specification
General Information
Manufacturer Black Box Corporation
Manufacturer Part Number LGB5028A-R3
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Series LGB5000
Product Name LGB5000 Series Gigabit Ethernet (1000-Mbps) Managed Switch - (24) 10/100/1000-Mbps Copper RJ45, (4) 100/1000-Mbps SFP+, (1) DB9 Console
Product Type Ethernet Switch
Technical Information
Features VLAN Segmentation
Features Remote Monitoring (RMON)
Interfaces/Ports
Total Number of Network Ports 24
Network (RJ-45) Yes
Port/Expansion Slot Details 24 x Gigabit Ethernet Network
Port/Expansion Slot Details 4 x Gigabit Ethernet Expasnion Slot
Media & Performance
Media Type Supported Twisted Pair
Media Type Supported Optical Fiber
Ethernet Technology Gigabit Ethernet
Network Technology 10/100/1000Base-T
Network Technology 1000Base-X
Maximum Data Transfer Rate 128 MB/s
I/O Expansions
Total Number of Expansion Slots 4
Expansion Slot Type SFP+
Number of SFP+ Slots 4
Network & Communication
Layer Supported 2
Networking Standards IEEE 802.1p
Networking Standards IEEE 802.3az
Networking Standards IEEE 802.1x
Networking Standards IEEE 802.1Q
Management & Protocols
Manageable Yes
Power Description
Input Voltage 120 V AC
Input Voltage 230 V AC
Power Source AC
Physical Characteristics
Height 1.7"
Width 17.4"
Depth 8.3"
Weight (Approximate) 8.38 lb
Miscellaneous
Package Contents
  • LGB5000 Series Gigabit Ethernet (1000-Mbps) Managed Switch - (24) 10/100/1000-Mbps Copper RJ45, (4) 100/1000-Mbps SFP+, (1) DB9 Console
  • 4 x Adhesive Rubber Feet
  • Mounting Accessory (for 19" Rack Shelf, optional)
  • 1 x RS-232 to RJ-45 Console Cable
  • 1 x AC Power Cord
  • 1 x Installation Guide
  • User Manual in PDF format on CD-ROM
Application/Usage Telecommunications
Application/Usage Enterprise
Application/Usage Server
Application/Usage Industrial
Application/Usage Security
Application/Usage Power
Application/Usage Network
Application/Usage Automation Industry
Application/Usage Data Center
Country of Origin Taiwan
Warranty
Limited Warranty 1 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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