Nexxt Solutions NHC-OF30S User Manual

The Nexxt Solutions NHC-OF30S is a high-performance network hub designed for small to medium-sized office environments, featuring 30 Fast Ethernet ports, auto-negotiation, auto-MDI/MDIX, plug-and-play operation, LED status indicators, wall-mountable design, and robust surge protection. It provides a reliable and cost-effective solution for expanding wired network connectivity. Below are key sections for safety, features, installation, configuration, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Indicators 6. Connecting Devices 7. Network Operation 8. Management Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 30-port Fast Ethernet hub, Power adapter, Mounting kit, User manual.

Feature	Description
30 Fast Ethernet Ports	10/100 Mbps auto-negotiation RJ45 ports
Auto-MDI/MDIX	Eliminates need for crossover cables
LED Indicators	Power, Link/Activity, Collision per port
Plug-and-Play	No configuration required
Wall Mountable	Includes brackets for flexible placement
Surge Protection	Built-in protection for enhanced durability
Fanless Design	Silent operation
Power Input	12V DC external power adapter
Operating Temperature	0°C to 40°C (32°F to 104°F)
Compliance	FCC, CE, RoHS

Installation

Unpack and inspect contents. Choose a well-ventilated location.

Position the hub: Place on a flat surface or mount on wall using included brackets.
Connect power: Plug the DC power adapter into the hub and then into a wall outlet.
Connect network devices: Use standard Ethernet cables (CAT5e or higher recommended).
Verify power: Ensure the Power LED illuminates.

WARNING! Do not place in direct sunlight or near heat sources. Ensure proper ventilation.

First-Time Setup

The hub is plug-and-play; no software configuration is required.

Power on: Connect the power adapter; the Power LED should light up.
Connect devices: Plug Ethernet cables from computers, printers, or other network devices into any port.
Verify connection: The Link/Activity LED for each connected port should light up or blink.
Network operation: The hub will automatically forward data packets between connected devices.

CAUTION! Use only the provided power adapter. Incorrect voltage may damage the unit.

Specifications

Model: NHC-OF30S
Ports: 30 x 10/100 Mbps RJ45 Auto-MDI/MDIX
Data Rate: Ethernet: 10 Mbps, Fast Ethernet: 100 Mbps
Network Standards: IEEE 802.3, 802.3u
Topology: Star
Cabling: UTP CAT3, 4, 5 (up to 100m)
LED Indicators: Power, Per Port: Link/Activity (Green), Collision (Amber)
Power Supply: 12V DC, 1.5A (external)
Dimensions: 440mm x 200mm x 44mm (17.3" x 7.9" x 1.7")
Weight: 2.5 kg (5.5 lbs)

Controls and Indicators

The hub features a simple front panel with LED indicators for status monitoring.

Front Panel:
Power LED (Green): Illuminates when unit is powered on.
Per Port LEDs:
Link/Activity (Green): Steady on indicates a valid link at 100 Mbps. Blinking indicates data activity.
Collision (Amber): Blinks when a data collision is detected on that port (shared media operation).

Rear Panel: DC Power Input jack, 30 RJ45 ports, Wall-mount slots.

Connecting Devices

Connect computers, network printers, servers, or other Ethernet devices.

Ensure the hub and all devices are powered off.
Insert one end of an Ethernet cable into a device's network port.
Insert the other end into any available port on the hub.
Power on the device and the hub.
Observe the Link/Activity LED for that port to confirm connection.

Tip: For connecting to another hub or switch, use any standard port (auto-MDI/MDIX handles crossover).

Network Operation

The hub operates at Layer 1 (Physical layer), broadcasting data to all connected ports.

Data Forwarding: Any data received on one port is repeated out to all other ports.
Speed Negotiation: Each port auto-negotiates to 10 Mbps or 100 Mbps with the connected device.
Collision Detection: The hub detects packet collisions on the shared network segment.
Bandwidth Sharing: Total bandwidth is shared among all connected devices.

WARNING! This is a hub, not a switch. Network performance may degrade with high traffic from multiple devices.

Management Features

This is an unmanaged hub. No software configuration, VLAN, QoS, or SNMP support is available. For basic monitoring, rely on the LED indicators.

Care & Maintenance

Unplug the power adapter before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid or aerosol cleaners.

CAUTION! Do not open the casing. There are no user-serviceable parts inside. Refer servicing to qualified personnel.

Regulatory Information

FCC Part 15 Class B: This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. CE Declaration of Conformity. RoHS compliant. Copyright © Nexxt Solutions. For technical support, visit www.nexxtsolutions.com or contact [email protected].

Troubleshooting

Symptom	Possible Cause	Corrective Action
No Power LED	Power adapter not connected	Check power adapter connection at hub and wall outlet. Try a different outlet.
No Link LED on port	Faulty cable/device off/port issue	Ensure device is on. Try a different cable. Try a different port on the hub.
Network is slow	High traffic/duplex mismatch	Hubs share bandwidth. Consider upgrading to a switch for better performance.
Intermittent connection	Loose cable/poor cable quality	Reseat cables at both ends. Use certified CAT5e or CAT6 cables.
All Link LEDs flashing rapidly	Network loop	Ensure no two ports on the hub are connected to each other via another cable or device.

Reset: Power cycle the hub by unplugging the power adapter for 10 seconds, then reconnecting.

Service: [email protected]; www.nexxtsolutions.com