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Black Box (20) SFP Gigabit+ (4) Combo Managed Switch

Black Box LGB5124A-R2

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Model LGB5124A-R2

UPC Code: 0822088125228

Provantage Code:  BABXJ5H

Condition:  Factory New

  • Product Type: Ethernet Switch
  • Layer Supported: 2
  • Power Source: Power Supply
  • Total Number of Network Ports: 4
  • Ethernet Technology: Gigabit Ethernet
  • TAA Compliant: Yes

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NetworkingRouting and Switching DevicesSwitches and Bridges


Black Box LGB5124A-R2 Specifications

    (20) SFP Gigabit+ (4) Combo Managed Switch

At a Glance

    • Pay-as-you-grow. Add SFPs when you need them to expand your network.
    • Includes (20) 100/1000-Mbps SFP (Small Form-Factor Pluggable) fiber ports and (4) dual-media 100/1000-Mbps UTP/SFP ports.


    • Get advanced switching and performance capabilities found in more expensive switches.
    • Provides superior manageability, security, QoS, and performance.
    • Well suited for workgroups, office LANs, and enterprise networks carrying higher-priority traffic for powerful applications.
    • Bundle multiple ports for higher bandwidth with Link Aggregate Control Protocol aggregation.
    • Programmable QoS classification and prioritization.
    • Robust security with VLAN capabilities.
    • OAM and CFM for easy set-up and management.
    • Manage via the Web or Command Line.
    • Supports the multi-node ring protection architecture.
    • Dual power input for redundancy.

    This advanced, fully-manageable Layer 2 switch gives you networking versatility. It features 24 high-speed fiber ports: (20) 100-/1000-Mbps SFP fiber ports and (4) dual-media 100-/1000-Mbps SFP/twisted-pair ports.

    This all fiber switch gives you the flexibility to select a variety of ranges with SFP transceivers.

    Advanced functions in an economical package.
    This switch offers advanced switching and security features normally found in more expensive switches. You'll get extensive management capabilities, greater bandwidth control, and QoS for switching in VoIP and other real-time, high-performance applications.

    Pack up the trunk.
    To provide more bandwidth to a specific application or segment, combine ports using the switch's 802.3ad Link Aggregate Control Protocol (LACP) capabilities. With this bandwidth aggregation feature, the combined ports create a multilink trunk for load sharing. The switch supports 12 groups with 8 ports per group.

    High-level service.
    The switch offers extensive Quality of Service support including prioritization, classification, scheduling, rate limitations, and more. The switch also supports eight hardware queues.

    Safe and secure.
    Your network is safe with this switch. It also offers MAC address filtering and VLAN capabilities so you can segregate networks.

    Multiple management options.
    Monitor, configure, and control the switch via its RS-232 serial port, or through Ethernet using CLI or Web-based management.

    For the SFP slots, order SFP modules, such as the 850-nm Multimode Gigabit SFP Module (LFP411) and 1310-nm Single-mode Gigabit SFP Module (LFP412). For information on SFP module compatibility, contact our FREE Tech Support.

Environmental Certification




General Information
Product Name(20) SFP Gigabit+ (4) Combo Managed Switch
Product ModelLGB5124A-R2
Product TypeEthernet Switch
Total Number of Network Ports4
Stack PortNo
Port / Expansion Slot Details4 x Gigabit Ethernet Network

24 x Gigabit Ethernet Expansion Slot

I/O Expansions
Number of Total Expansion Slots24
Expansion Slot TypeSFP
Shared SFP SlotYes
Number of SFP Slots24
Media & Performance
Media Type SupportedTwisted Pair

Optical Fiber

Ethernet TechnologyGigabit Ethernet
Network Technology1000Base-X


Network & Communication
Layer Supported2
Power Description
Power SourcePower Supply
Redundant Power Supply SupportedYes
Management & Protocols
Physical Characteristics
Limited Warranty1 Year
Environmentally FriendlyYes
Country of OriginTaiwan
Supplies/Accessories for Black Box LGB5124A-R2

Black Box 550M SFP/1250 External Diag MM 850 LC

Mfg Part# LFP411

Black Box SFP/1250 Extended Diag MM 1310 LC 2KM

Mfg Part# LFP412

Black Box SFP/155 Extended Diag MM 850 LC 2KM

Mfg Part# LFP401

Black Box SFP/155 Extended Diag SM 1310 LC 60KM

Mfg Part# LFP403

Considering a Volume Purchase?
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Purchase at least $5,000 of Black Box products to qualify.

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Black Box Model LGB5124A-R2