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Black Box LIE402A 4-Port Gigabit Ethernet Switch - 2 SFP Slots - PoE++ - Layer 2 - DIN Rail Mountable
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Product Features
Technical Overview
The switch provides four Gigabit Ethernet ports with auto-negotiation for 10/100/1000Base-T connections over twisted pair cabling. Two dedicated SFP (mini-GBIC) slots support 1000Base-X fiber optic transceivers, enabling long-distance uplinks or backbone connections with high data integrity.
Built as a Layer 2 device, it supports essential switching features including IGMP snooping for efficient multicast traffic handling, port mirroring for network monitoring, and spanning tree protocol for loop prevention. The integrated PoE++ capability adheres to IEEE 802.3bt standards, delivering higher power budgets per port compared to earlier PoE and PoE+ implementations.
Relevant factors for this section include Total Number of Network Ports, Network (RJ-45), Uplink Port, 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
This switch combines essential Gigabit performance with deployment flexibility, particularly suited for environments where space, power delivery, and media diversity are priorities.
Dual Media Support
Connect via standard RJ-45 copper cables for local devices or use SFP fiber modules for noise-immune, long-distance links up to several kilometers, ideal for connecting separate buildings or floors.
- Twisted Pair (Cat5e/6/6a)
- Optical Fiber (via SFP)
Industrial-Grade Mounting
The DIN rail compatible chassis ensures secure mounting in industrial racks, control panels, or network closets, resisting vibration and saving space compared to desktop switches.
- Standard 35mm DIN Rail
- Compact Footprint
Enhanced PoE Budget
PoE++ support allows the switch to deliver higher power per port, suitable for demanding devices like PTZ cameras, multi-radio access points, or thin clients without separate power supplies.
- IEEE 802.3bt Compliant
- Simplified Power Distribution
Deployment / Use Cases
The LIE402A serves as a cost-effective network aggregation point where simplicity, power delivery, and media flexibility are required. Its unmanaged nature reduces setup time and eliminates ongoing administrative overhead.
Common applications include small office network cores, retail point-of-sale backbones, classroom or conference room connectivity, and industrial automation networks where DIN rail mounting is standard.
Small Office / Retail
Connect computers, printers, and IP phones in a small office, using the SFP uplink to link to a main router or server room over fiber for better performance and electrical isolation.
Industrial IoT & Surveillance
Deploy in control panels to connect PLCs, sensors, and IP cameras, with PoE++ powering devices directly and fiber uplinks ensuring reliable data transmission in electrically noisy environments.
Physical Profile
The switch features a compact, rugged metal enclosure measuring 5.50" deep by 1.50" wide by 5.50" high (139.7 x 38.1 x 139.7 mm), weighing approximately 1.7 lbs (771 g). Its DIN rail mountable design includes integrated clips for quick installation on standard 35mm rails, making it suitable for panel or cabinet mounting without additional brackets.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 5.50" (139.70 mm), 1.50" (38.10 mm), 5.50" (139.70 mm), 1.70 lb (771.11 g). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 1.50" (38.10 mm)
- Depth
- 5.50" (139.70 mm)
- Height
- 5.50" (139.70 mm)
- Weight
- 1.70 lb (771.11 g)
What's in the Box
The package includes all necessary components for immediate deployment.
Highlights
- 4 Gigabit Ethernet ports with auto-negotiating 10/100/1000Base-T connectivity
- 2 SFP (mini-GBIC) slots for fiber optic uplinks using 1000Base-X transceivers
- PoE++ support on RJ-45 ports compliant with IEEE 802.3bt for high-power devices
- Layer 2 switching with IGMP snooping, port mirroring, and spanning tree protocol
- DIN rail mountable form factor for secure industrial or cabinet installation
- Unmanaged operation for plug-and-play deployment with zero configuration
- TAA compliant and manufactured in the United States
- RoHS, WEEE, and REACH environmental compliance
- Includes power adapter (±46 to ±57 VDC) for flexible power sourcing
- Backed by a 2-year limited warranty
Specifications
| Specifications | |
|---|---|
| Manufacturer | Black Box Corporation |
| Manufacturer Part Number | LIE402A |
| Brand Name | Black Box |
| Product Name | Ethernet Switch |
| Packaged Quantity | 1 |
| Product Type | Ethernet Switch |
| Interfaces/Ports | |
| Total Number of Network Ports | 4 |
| Network (RJ-45) | Yes |
| Uplink Port | Yes |
| Modular | Yes |
| Port/Expansion Slot Details | 4 x Gigabit Ethernet PoE++,2 x Gigabit Ethernet Expansion Slot |
| Media & Performance | |
| Media Type Supported | Optical Fiber,Twisted Pair |
| 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) |
| Number of SFP Slots | 2 |
| Network & Communication | |
| Layer Supported | 2 |
| Networking Standards | IEEE 802.3bt,IEEE 802.3,IEEE 802.3af,IEEE 802.3at |
| Management & Protocols | |
| Manageable | No |
| Power Description | |
| PoE (RJ-45) Port | Yes |
| Power Source | Power Adapter |
| Physical Characteristics | |
| Form Factor | DIN Rail Mountable |
| Height | 5.50" (139.70 mm) |
| Width | 1.50" (38.10 mm) |
| Depth | 5.50" (139.70 mm) |
| Weight (Approximate) | 1.70 lb (771.11 g) |
| Miscellaneous | |
| Package Contents | Ethernet Switch 1 x ±46 To ±57 VDC Power Adapter |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),Waste Electrical and Electronic Equipment Directive (WEEE),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) |
| Country of Origin | United States |
| TAA Compliant | Yes |
| Warranty | |
| Limited Warranty | 2 Year |
FAQ
How many devices can I connect directly to this switch?
The Black Box LIE402A provides four Gigabit Ethernet RJ-45 ports for direct device connections, such as computers, printers, IP phones, or cameras. Additionally, its two SFP slots allow for fiber uplinks to other switches or routers, effectively expanding your network beyond the four copper ports without using one as an uplink.
Does this switch support Power over Ethernet (PoE)?
Yes, the switch supports PoE++ (IEEE 802.3bt) on its RJ-45 ports. This standard delivers higher power per port compared to basic PoE (802.3af) or PoE+ (802.3at), making it suitable for powering devices like high-performance wireless access points, pan-tilt-zoom cameras, or thin clients that require more than 30W per port.
Can I use fiber optic connections with this switch?
Yes, the two SFP (Small Form-factor Pluggable) slots accept standard Gigabit SFP transceivers for 1000Base-X fiber optic connections. You can use multimode or single-mode SFPs to connect over fiber for distances up to several kilometers, providing electrical isolation, noise immunity, and longer reach than copper cables.
Is this a managed or unmanaged switch?
This is an unmanaged switch, meaning it operates plug-and-play with no configuration required. It automatically negotiates speed and duplex settings, supports basic Layer 2 features like IGMP snooping and spanning tree, but does not offer VLANs, QoS, or web-based management interfaces. This simplifies deployment for small networks where advanced control isn't needed.
How do I mount this switch in an industrial setting?
The switch is designed for DIN rail mounting, compatible with standard 35mm rails commonly used in industrial control panels and electrical cabinets. It includes integrated mounting clips for secure attachment without additional hardware, saving space and providing vibration resistance compared to desktop placement.
What is the warranty and compliance status of this switch?
The Black Box LIE402A comes with a 2-year limited warranty and is TAA (Trade Agreements Act) compliant, making it eligible for U.S. government procurement. It also meets environmental standards including RoHS, WEEE, and REACH, and is manufactured in the United States, ensuring regulatory adherence for commercial and institutional deployments.
| Qty | Price | Available |
|---|
