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Black Box LGB2126A Gigabit Ethernet Managed Switch - 24 Ports - 2 SFP Slots - Layer 2 - 1U Rack-Mountable
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Product Features
Technical Overview
Built on Gigabit Ethernet technology, the LGB2126A supports 10/100/1000Base-T for copper connections and 1000Base-X for fiber via SFP modules, ensuring backward compatibility and high-speed data transfer. The switch features 24 auto-negotiating RJ-45 ports that automatically detect and configure optimal speed and duplex settings, simplifying deployment and reducing configuration errors.
The two non-shared SFP slots allow for independent fiber uplinks or connections to other network devices, enabling network expansion and backbone connectivity without sacrificing copper port availability. A built-in power supply delivers stable voltage to all internal components, supporting consistent operation without the need for redundant power in standard deployments.
Relevant factors for this section include Total Number of Network Ports, Uplink Port, Modular, Media Type Supported. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
The LGB2126A provides a future-ready foundation for growing networks, balancing port density with expansion flexibility. Its managed capabilities allow for advanced traffic prioritization, VLAN segmentation, and network monitoring, which are essential for maintaining performance and security in business-critical applications.
High-Density Connectivity
With 24 Gigabit Ethernet ports, this switch can directly connect a large number of devices such as computers, printers, IP phones, and access points, reducing the need for additional switches and simplifying cable management.
- 24 auto-sensing RJ-45 ports
- Supports up to 1000 Mbps per port
- Ideal for device aggregation
Fiber Uplink Readiness
The two dedicated SFP slots enable fiber optic connections for longer-distance uplinks or connections to core switches, providing immunity to electromagnetic interference and supporting network segmentation.
- Independent SFP slots
- 1000Base-X compatibility
- Extends network reach up to kilometers
Enterprise Management Features
Layer 2 management includes IGMP snooping for efficient multicast traffic handling, port mirroring for network analysis, and spanning tree for loop prevention, ensuring network stability and efficient bandwidth utilization.
- IGMP snooping
- Port mirroring
- Spanning tree protocol
Deployment / Use Cases
This switch is designed for small to medium-sized business networks, branch offices, and educational environments where reliable, managed switching is required. Its combination of copper and fiber connectivity makes it adaptable to various infrastructure types, from traditional CAT6 cabling to fiber backbones.
In office settings, the LGB2126A can serve as an access layer switch, connecting end-user devices and providing uplinks to distribution or core switches via fiber. For industrial or campus deployments, the SFP slots allow connections between buildings or across longer distances where copper limitations apply. The rack-mountable form factor integrates seamlessly into standard 19-inch racks, while the desktop option with rubber feet suits smaller setups or temporary installations.
Physical Profile
The switch measures 1.45 inches in height, 8.57 inches in width, and 5.86 inches in depth, with a weight of 4.63 pounds. Its compact 1U design minimizes rack space consumption, while the included rackmount hardware (two brackets and six screws) ensures secure installation. For desktop use, four adhesive rubber feet are provided to prevent sliding and protect surfaces. The solid construction supports stable operation in controlled environments, with dimensions optimized for standard rack cabinets and desktop placements.
- Width
- 8.57" (217.68 mm)
- Depth
- 5.86" (148.84 mm)
- Height
- 1.45" (36.83 mm)
- Weight
- 4.63 lb (2100.13 g)
What's in the Box
The package includes all necessary components for immediate deployment in either rack-mount or desktop configurations.
Highlights
- 24 Gigabit Ethernet ports for high-density device connectivity
- 2 dedicated SFP slots for fiber optic uplinks or expansion
- Layer 2 managed with IGMP snooping, port mirroring, and spanning tree
- 1U rack-mountable design with included desktop rubber feet
- Supports 10/100/1000Base-T copper and 1000Base-X fiber
- Built-in power supply for reliable operation
- TAA compliant for government and educational procurement
- RoHS and WEEE environmental compliance
- Includes rackmount hardware and quick installation guide
- 1-year limited warranty for peace of mind
Specifications
| Specifications | |
|---|---|
| Manufacturer | Black Box Corporation |
| Manufacturer Part Number | LGB2126A |
| Brand Name | Black Box |
| Product Name | Gigabit Ethernet Managed Switch - (24) RJ-45, (2) SFP |
| Product Type | Ethernet Switch |
| Interfaces/Ports | |
| Total Number of Network Ports | 24 |
| Uplink Port | Yes |
| Modular | Yes |
| Port/Expansion Slot Details | 24 x Gigabit Ethernet Network,2 x Gigabit Ethernet Expansion Slot |
| Media & Performance | |
| Media Type Supported | Twisted Pair,Optical Fiber |
| Ethernet Technology | Gigabit Ethernet |
| Network Technology | 10/100/1000Base-T,1000Base-X |
| I/O Expansions | |
| Total Number of Expansion Slots | 2.0 |
| Expansion Slot Type | SFP (mini-GBIC) |
| Shared SFP Slot | No |
| Number of SFP Slots | 2 |
| Network & Communication | |
| Layer Supported | 2 |
| Management & Protocols | |
| Manageable | Yes |
| Power Description | |
| Power Source | Power Supply |
| Redundant Power Supply Supported | No |
| Physical Characteristics | |
| Compatible Rack Unit | 1U |
| Form Factor | Desktop,Rack-mountable |
| Height | 1.45" (36.83 mm) |
| Width | 8.57" (217.68 mm) |
| Depth | 5.86" (148.84 mm) |
| Weight (Approximate) | 4.63 lb (2100.13 g) |
| Miscellaneous | |
| Package Contents | LGB2126A Switch (1) AC Power Cord (4) Adhesive Rubber Feet Rackmount Hardware (2 brackets, 6 screws) Quick Installation Guide |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),Waste Electrical and Electronic Equipment Directive (WEEE) |
| Country of Origin | Taiwan |
| TAA Compliant | Yes |
| Warranty | |
| Limited Warranty | 1 Year |
User Manual
FAQ
How many devices can I connect directly to this switch?
The Black Box LGB2126A provides 24 Gigabit Ethernet RJ-45 ports, allowing you to connect up to 24 wired devices such as computers, printers, IP phones, or access points directly. Additionally, the two SFP slots can be used for uplinks to other switches or network segments, expanding connectivity beyond the base port count without using the copper ports.
What types of SFP modules are compatible with this switch?
This switch supports standard SFP (mini-GBIC) modules that are compatible with 1000Base-X Gigabit Ethernet over fiber optic cables. You can use various SFP modules for different fiber types (e.g., multi-mode or single-mode) and distances, allowing flexibility in network design. The slots are non-shared, meaning each operates independently without affecting copper port functionality.
Can this switch be used in a rack-mounted setup?
Yes, the LGB2126A is designed for 1U rack mounting and includes the necessary hardware (two brackets and six screws) for installation in a standard 19-inch rack. Its compact height of 1.45 inches conserves rack space, making it suitable for server rooms or network closets. For non-rack environments, adhesive rubber feet are included for stable desktop placement.
What management features does this Layer 2 switch offer?
As a managed Layer 2 switch, it provides features such as IGMP snooping for efficient multicast traffic management, port mirroring for network monitoring and troubleshooting, and spanning tree protocol (STP) to prevent network loops and ensure redundancy. These capabilities allow for better traffic control, security, and network optimization compared to unmanaged switches.
Is this switch compliant with TAA requirements?
Yes, the Black Box LGB2126A is TAA (Trade Agreements Act) compliant, with a country of origin listed as Taiwan. This makes it suitable for procurement by U.S. government agencies, educational institutions, and other organizations that require TAA-compliant networking equipment, ensuring adherence to federal acquisition regulations.
What is included in the package for installation?
The package contains the LGB2126A switch, an AC power cord, four adhesive rubber feet for desktop use, rackmount hardware (two brackets and six screws), and a quick installation guide. This comprehensive set allows for immediate deployment in either rack-mounted or desktop configurations without needing additional accessories for basic setup.
| Qty | Price | Available |
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