LBH120A-H-SC - Switch Black Box - Free user manual and instructions
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| Product Type | Unmanaged Ethernet Switch |
| Model Number | LBH120A-H-SC |
| Ports | 12 x 10/100 Mbps Fast Ethernet RJ-45 ports |
| Uplink Port | 1 x 100Base-FX SC-type fiber port |
| Dimensions (W x D x H) | 280 x 180 x 44 mm (11.0 x 7.1 x 1.7 in) |
| Weight | 1.5 kg (3.3 lb) |
| Power Supply | External AC adapter: 100-240V, 50/60Hz, 12V DC 1A output |
| Power Consumption | Max 12W |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Storage Temperature | -20°C to 70°C (-4°F to 158°F) |
| Humidity | 10% to 90% non-condensing |
| Switching Capacity | 4.4 Gbps |
| MAC Address Table Size | 8K entries |
| Jumbo Frame Support | Up to 1536 bytes |
| Mounting | Desktop or rack-mountable with included ears |
| LED Indicators | Power, Link/Activity per port |
| Standards Compliance | IEEE 802.3, 802.3u, 802.3x, 802.1p |
| Warranty | Limited lifetime warranty |
| Maintenance | Keep clean and dry; no user-serviceable parts inside |
| Safety | CE, FCC Class A, UL listed (power adapter) |
| Spare Parts & Reparability | Contact Black Box support for replacement power adapter |
Frequently Asked Questions - LBH120A-H-SC Black Box
How do I connect the switch to my network?
Connect an Ethernet cable from your router or modem to any RJ-45 port on the switch. Then connect your devices (computers, printers, etc.) to the remaining ports using Ethernet cables.
What is the fiber port used for?
The SC-type fiber port allows connection to a fiber optic network for long-distance links, typically up to 2 km using multimode fiber.
Does this switch require configuration?
No, the LBH120A-H-SC is an unmanaged switch. It works plug-and-play with no software setup required.
Can I use the fiber port and RJ-45 ports simultaneously?
Yes, all ports operate simultaneously and independently. The switch forwards traffic between any ports as needed.
What is the maximum cable length for the RJ-45 ports?
For 10/100 Mbps Ethernet, the maximum cable length is 100 meters (328 feet) using Cat5e or better cable.
How do I reset the switch to factory defaults?
This switch does not have a reset button because it is unmanaged. Simply power cycle the device to clear any temporary issues.
Is the switch fanless?
Yes, the LBH120A-H-SC is designed with passive cooling (no fans), making it silent and suitable for noise-sensitive environments.
What power adapter does this switch need?
It requires a 12V DC, 1A external power adapter with a 2.1mm center-positive barrel connector. Black Box part number: PS-12V1A.
Can I mount this switch on a wall?
Yes, the switch has mounting holes on the bottom for wall mounting using appropriate screws (not included).
The power LED is off. What should I check?
First, ensure the power adapter is plugged into a working outlet and the switch. If still off, try a different outlet. If the problem persists, the adapter may be faulty; contact Black Box support.
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USER MANUAL LBH120A-H-SC Black Box
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Product information
Brand : Black Box
Model : LBH120A-H-SC
Category : Switch