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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

  • Type of switchManaged
  • Product formatDesktop Rack-mountable
  • Management typeEthernet Switch
  • Uplink portsSFP (mini-GBIC)
  • Main portsGigabit Ethernet 24 x Gigabit Ethernet Network 2 x Gigabit E
  • Main port speed10/100/1000Base-T 1000Base-X
  • 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.

How it compares

Measured against everything we stock in Ethernet & PoE Switches, at today’s prices. Recalculated every night.

Price $228.99
Cheaper than about 65% of the 2,759 comparable items (median $482.99).

Specifications

Product
Brand nameBlack Box
Connectivity
Management typeEthernet Switch
Main port speed10/100/1000Base-T 1000Base-X
Uplink connectionSFP (mini-GBIC)
Stacking supportDesktop Rack-mountable
Layer support2
Ports & slots
Uplink portsYes
Main portsGigabit Ethernet 24 x Gigabit Ethernet Network 2 x Gigabit Ethernet Expansion Slot
Power
Power detailsSupply
Size & build
Shipping weight2.31 kg
Package size362 × 330 × 89 mm
More details
Type of switchManaged
Product formatDesktop Rack-mountable

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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