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Black metal box with 24 RJ-45 ports and two SFP slots on the front

Black Box Corporation

Black Box Corporation LGB2126A 24-port Gigabit network switch (2 SFP)

SKU CH-F463-F32H6 MPN LGB2126A

Managed 24-port Gigabit desktop or rack-mount switch with two SFP uplinks, web management, VLAN, QoS and 802.3az energy-efficient Ethernet

  • Switch Typemanaged
  • FormatDesktop Rack-mountable
  • Network Management TypeEthernet Switch
  • Uplink PortsYes
  • Uplink InterfaceSFP (mini-GBIC)
  • Primary PortsGigabit Ethernet 24 x Gigabit Ethernet Network 2 x Gigabit E
  • 24 autosensing Gigabit RJ-45 ports connect wired devices at 10/100/1000 Mbps
  • Two SFP uplink slots add fiber links for backbone or long runs
  • Web browser management with SNMP v1/v2c simplifies daily admin tasks
  • 1Q VLANs and 802.1p QoS segment and prioritize voice and video traffic
  • IEEE 802.3az cuts power draw by up to 50% during low activity

24-port Gigabit managed switch

The Black Box LGB2126A provides 24 autosensing 10/100/1000 Mbps RJ-45 ports and two SFP uplink slots for fiber connectivity. It operates as a Layer 2 managed switch with web-based configuration and SNMP v1/v2c support. The desktop rack-mountable format suits small business or branch-office deployments.

Suited for VLAN and QoS needs

Network administrators who require up to four simultaneous VLANs with port-based, 802.1Q tag-based, private or MAC-based segmentation will benefit. The 802.1p QoS prioritises VoIP and video traffic. Buyers needing Layer 3 routing, advanced stacking protocols or PoE power delivery should consider other platforms.

Fits standard rack or desktop setups

The unit includes an internal power supply and supports IEEE 802.3az energy-efficient Ethernet to reduce consumption during low activity. SFP transceivers are sold separately for fiber uplinks. Security features include 802.1X port authentication, SSH and SSL for encrypted management access.

Highlights

  • 24 autosensing Gigabit RJ-45 ports connect wired devices at 10/100/1000 Mbps
  • Two SFP uplink slots add fiber links for backbone or long runs
  • Web browser management with SNMP v1/v2c simplifies daily admin tasks
  • 1Q VLANs and 802.1p QoS segment and prioritize voice and video traffic
  • IEEE 802.3az cuts power draw by up to 50% during low activity

Specifications

BrandBlack Box
Switch Typemanaged
FormatDesktop Rack-mountable
Network Management TypeEthernet Switch
Uplink PortsYes
Uplink InterfaceSFP (mini-GBIC)
Primary PortsGigabit Ethernet 24 x Gigabit Ethernet Network 2 x Gigabit Ethernet Expansion Slot
Primary Port Speed10/100/1000Base-T 1000Base-X
Uplink SpeedSFP (mini-GBIC)
StackableDesktop Rack-mountable
Layer2
PowerPower Supply
Shipping weight2.31 kg
Package size362 × 330 × 89 mm

Questions about this item

What type of SFP transceivers do I need for the two uplink ports?

The two SFP ports accept standard Gigabit SFP mini-GBIC transceivers for fiber uplink connections.

Will my existing 10/100 Mbps devices work on the 24 RJ-45 ports?

Yes, each of the 24 ports auto-negotiates 10, 100 or 1000 Mbps so legacy Fast Ethernet gear connects without configuration.

How can I verify the switch is forwarding traffic correctly after installation?

Log into the web management interface to monitor per-port activity, VLAN status and QoS counters in real time.

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