4 Port Unmanaged Switch
In many real-world projects, networks fail not because they are too simple, but because they are overcomplicated. Small offices, CCTV installations, retail stores, and temporary sites often don’t need VLANs, CLI access, or advanced configurations. They need a switch that just works, day after day, without maintenance overhead. That is exactly where the LM-402UGP Unmanaged Switch fits.
Key Specifications
Product Information
| Product Category | Unmanaged PoE Switch |
| Hardware Specifications | 4GE+2GE |
| Warranty | 3 Years |
Port Specifications
| Total number of optical ports | 0 |
| Number of 1GE combo ports | 0 |
| Number of 1GE SFP ports | 0 |
| Number of 10GE SFP+ ports | 0 |
| Number of 10/100BASE-T ports | 0 |
| Number of 10/100/1000BASE-T ports | 6 (4 PoE + 2 Uplink) |
| Number of 10/100/1000/2500BASE-T ports | 0 |
| Number of 100/1000/2.5G/5G/10GBASE-T ports | 0 |
Power Supply and Consumption
| Power Supply and Consumption | 2.3 |
| Number of PoE Out ports | 4 |
| Number of PoE/PoE+ Out ports | 4 (IEEE 802.3af/at) |
| Number of PoE/PoE+/PoE++ Out ports | 0 |
| PoE budget | 65W |
| PoE power pins | 1/2(+), 3/6(-) End-span |
System Specifications
| Forwarding rate | 8.93 Mpps |
| Switching capacity | 12 Gbps |
Environment and Reliability
| MTBF | >50,000 hours |
| Operating temperature | -20°C to 50°C |
| Altitude | Up to 5000m |
| Surge protection | 6KV (Lightning), 8KV (Air ESD) |
Software Specifications
| PoE watchdog | Supported |
| Jumbo frame length (MTU) | 10K |
Security
| Port isolation | Supported (One-key VLAN) |
| Broadcast storm control | Supported |
Ummanaged Switch
LM-402UGP Unmanaged Switch
These 4 port unmanaged switches offer plug-and-play functionality, making them easy to install in any network environment. Whether you’re upgrading an office or setting up a home network, the 4 port unmanaged switch is a versatile and cost-effective choice.
Model
LMT-GE-MM850
LMT-MM850
Series
LMT-GE-MM850
LMT-GE-MM850
LMT-GE-MM850
LMT-GE-MM850
Core Specifications
- Hardware Type: Unmanaged Ethernet Switch
- Port Configuration: 4 × Ethernet ports
- Switching Layer: Layer 2 (automatic forwarding)
- Management: None (true plug-and-play)
- PoE Support: Available in PoE variant
- Installation Type: Desktop or wall-mount
- Operating Use: Indoor commercial environments
- Warranty: 1 to 3 years.
Models
Gigabit
Gigabit
Product Comparison
Downstream
Ports
4*10/100/1000Base-T (PoE)
8*10/100/1000Base-T (PoE)
16*10/100/1000Base-T (PoE)
24*10/100/1000Base-T (PoE)
Uplink Ports
2*10/100/1000Base-T
2*10/100/1000Base-T
2*10/100/1000 Base-T RJ-45；1*1000 Base-X SFP
2*10/100/1000 Base-T RJ-45；1*1000 Base-X SFP
Network
Standard
IEEE802.3, IEEE802.3u, IEEE802.3X, IEEE802.3ab
IEEE802.3, IEEE802.3u, IEEE802.3x, IEEE802.3ab
IEEE802.3, IEEE802.3u, IEEE802.3X, IEEE802.3ab
IEEE802.3, IEEE802.3u, IEEE802.3X, IEEE802.3ab
Switch Capacity
12Gbps
20Gbps
38Gbps
54Gbps
Throughput
8.93Mpps
14.88Mpps
28Mpps
40.176Mpps
Switch
Processing
Scheme
Store and Forward
Store and Forward
Store and Forward
Store and Forward
Memory Buffer
1M
1.5M
4M
4M
MAC Table
2K
4K
8K
8K
PoE Standard
802.3af/at(PSE)
802.3af/at(PSE)
802.3af/at(PSE)
802.3af/at(PSE)
PsE Type
End-span
End-span
End-span
End-span
Power Pin
Assignment
1/2( +)，3/6(-)
1/2( +)，3/6(-)
1/2( +)，3/6(-)
1/2( +)，3/6(-)
PoE Power
Output
Single port power 15.4w, maximum port power 30w
Single port power 15.4w, maximum port power 30w
Single port power 15.4w, maximum port power 30w
Single port power 15.4w, maximum port power 30w
PoE Total Power
65w
120w
260w
360W
Lightning
protection
6KV Execute : IEC61000-4-5
6KV Execute : IEC61000-4-5
6KV Execute : IEC61000-4-5
6KV Execute : IEC61000-4-5
ESD
6KV Contact discharge 8KV Air discharge Execute：IEC61000-4-2
6KV Contact discharge 8KV Air discharge Execute：IEC61000-4-2
6KV Contact discharge 8KV Air discharge Execute：IEC61000-4-2
6KV Contact discharge 8KV Air discharge Execute：IEC61000-4-2
Power Supply
DC:52V1.25A
DC 52V2.3A
52V/3.8A
52V/5.76A
Power
Dissipation
＜5w
＜5w
＜15w
＜20W
Work
temperature
-20℃~55℃
-20℃~55℃
-20℃~55℃
-20℃~55℃
Storage
temperature
-20℃~75℃
-20℃~75℃
-20℃~75℃
-20℃~75℃
Humidity(Noncondensin)
5%-95%
5%-95%
5%-95%
5%-95%
Dimension（ L
×W × H ）
195mm×130mm×40mm
195mm×130mm×40mm
310mm*210mm*44mm
310mm*210mm*44mm
Regulator
CE, FCC, ROHS
CE, FCC, ROHS
CE, FCC, ROHS
CE, FCC, ROHS
6-port 10/100/1000M PoE Ethernet switch
1 unit
1 unit
1 unit
1 unit
power line
1 article
1 article
1 article
1 article
User Guide
1 book
1 book
1 book
1 book
Warranty Card
1 Sheet
1 Sheet
1 Sheet
1 Sheet
Understanding the LM-402UGP Unmanaged Switch
An unmanaged switch like the LM-402UGP works as a straightforward network distributor. You connect your devices, power them on, and traffic flows automatically. There is no configuration panel, no login, and no risk of misconfiguration. From our experience working with CCTV vendors and system integrators, the LM-402UGP is often chosen for:
- Small camera clusters
- Branch offices
- Temporary installations
- Edge network extensions
It acts as a stable foundation rather than a control center, which is exactly what unmanaged switches are meant to be.
Key Features
4 Ethernet Ports for Small Networks
The LM-402UGP is built for compact deployments. Four ports are ideal when you need to connect a router, a few cameras, or a couple of office devices without adding unnecessary hardware.
True Plug-and-Play Operation
There is no setup process. Once powered, the switch automatically detects devices and manages traffic flow. This reduces installation time and eliminates configuration errors.
Stable Traffic Forwarding
Even without management features, the switch handles traffic efficiently. Devices communicate smoothly without manual intervention, which is critical for CCTV feeds and POS systems.
Compact and Installer-Friendly Design
Its small footprint allows it to fit inside cabinets, behind counters, or near camera mounting points. Installers often prefer this model when space is limited.
Compatible with Mixed Devices
The LM-402UGP works seamlessly with routers, IP cameras, access points, NVRs, and office equipment from different brands.
Performance & Real-World Behavior
In small networks, performance issues often come from poor switching quality, not bandwidth. The LM-402UGP focuses on:
- Consistent packet forwarding.
- Minimal latency for local traffic.
- Stable operation over long hours.
From field deployments I’ve seen, this switch performs reliably in:
- 24/7 CCTV environments.
- Retail stores running POS systems all day.
- Offices with constant device usage.
Because there is no software layer, there are fewer failure points, which improves long-term stability.
Applications & Use Cases
CCTV & Security Installations
Installers commonly use the LM-402UGP to connect a small group of IP cameras to an NVR. Its simplicity reduces troubleshooting time during handover.
Small Offices & Home Offices
For basic networking needs—PCs, printers, and routers—this switch provides steady connectivity without IT involvement.
Retail Stores & POS Networks
Retail environments benefit from a switch that doesn’t need updates or configuration. The LM-402UGP keeps POS terminals and back-office devices connected reliably.
Temporary & Mobile Deployments
Events, construction sites, and short-term offices often require fast setup. This model is ideal because it can be deployed in minutes.
Edge Network Expansion
It works well as an extension switch when you need to add a few extra devices far from the main network rack.
Installation & Maintenance Insights.
- Placement: Install in a dry, ventilated area away from heat sources.
- Power Stability: Use a stable power source, especially in CCTV setups.
- Cable Quality: Good Ethernet cables significantly improve reliability.
- No Maintenance Required: No firmware updates or configuration checks.
Why Choose LM-402UGP Over Bigger Models?
Not every project needs 8, 16, or 24 ports. Using a large switch in a small setup increases cost and complexity without adding value.
The LM-402UGP is ideal when:
- The network size is fixed
- There is no need for traffic control
- Downtime must be minimized
- Installers want fast deployment
In short, it does less, but it does it well.
Product Resources
- Download Product Datasheet
Order Informations
Device
LM-402UGP
Power Supply
DC:52V1.25A
Quick Start Guide
1
Warranty Card
1
Dimension (w x d x h)
195mm×130mm×40mm
Frequently Asked Question (FAQ)
A 4-port unmanaged switch is a plug-and-play Ethernet switch that connects multiple network devices without requiring configuration. Unlike a 4-port managed switch, an unmanaged switch does not offer VLANs, QoS, or advanced traffic control.
✅ Best for: Small networks, home offices, IP cameras, and industrial use.
✔ 4-Port Unmanaged Switch:
No configuration required (plug-and-play)
Lower cost and easy to install
Ideal for basic networking
A 4-port PoE switch supplies Power over Ethernet (PoE) to connected devices like IP cameras, wireless access points, and VoIP phones. A 4-port PoE switch for IP cameras eliminates the need for separate power adapters, reducing cable clutter.
Popular options include:
4-port gigabit PoE switch
4-port hardened PoE switch (for industrial use)
A 4-port gigabit switch provides high-speed 1000Mbps (1Gbps) Ethernet connections, ensuring faster data transfer compared to a 10/100 Mbps switch.
Benefits of a 4-port gigabit Ethernet switch:
✔ Ideal for gaming, video streaming, and fast data transfers
✔ Supports multiple high-speed devices
✔ Better performance than a 10/100/1000 switch
For fiber networks, consider a 4-port gigabit fiber switch or a 4-port SFP switch.
No. A 4-port Ethernet switch is smarter than a 4-port Ethernet hub:
Switch: Directs data only to the intended device (efficient and fast)
Hub: Broadcasts data to all connected devices (causes network congestion)
For better speed and performance, use a 4-port network switch instead of a 4-port Ethernet hub
A 4-port fiber switch is an Ethernet switch with fiber optic ports (SFP ports) for long-distance data transmission.
✔ Use a 4-port SFP switch for data centers, industrial automation, and ISP networks.
✔ A gigabit fiber switch provides high-speed and interference-free connectivity.
For fiber-optic-based networks, a 4-port fiber optic switch is a great choice.
Yes! A 4-port gigabit switch is perfect for:
🎮 Gaming consoles (PS5, Xbox, PC LAN setups)
📺 4K UHD Streaming (Netflix, YouTube, Twitch)
💻 Home office setups with high-speed internet
For best performance, use a 4-port gigabit Ethernet switch instead of a wireless connection.