General
Number of ports	4
Port speed	10/100/1000 Mbps
Current supply	USB or power supply
Switching method	Store-and-forward
MDI/MDI-X	Auto
Warranty	1 year
LED indicators
Operating system independent

The BlackBox LGB304A is a compact network switch with four ports, designed for small networks in offices or home environments. It enables the connection of multiple devices via Ethernet and offers Gigabit speeds up to 1000 Mbps per port. Due to its compact design, the device is ideal for use behind a PC or in tight workspaces.

Applications
This switch is designed for small networks, such as those found in home offices, small businesses, or when expanding existing networks. It is particularly suitable for users who require a simple and fast connection of multiple end devices such as printers, laptops, or external hard drives, without compromising on high data transfer rates. The Plug-and-Play function allows immediate operation without additional configuration.

Functions and Features in Detail
All four ports are autosensing and automatically detect the available speed (10/100/1000 Mbps) and transmission mode (half-duplex or full-duplex). The Auto-MDI/MDI-X function ensures that no special crossover cables are required – any device can be connected directly, regardless of whether it is an end device or another switch. LEDs on each port indicate connection status and data transmission, simplifying network troubleshooting.

Technology Explained Simply
The switch operates using the store-and-forward method, in which entire data packets are received, checked, and then forwarded. This ensures error-free data transmission and prevents collisions in the network. The non-blocking architecture allows simultaneous use of all ports without speed loss.

Compatibility and Accessories
The switch is compatible with standard Ethernet cables (CAT5e or higher) and can be connected to any device with an RJ45 port. Use is independent of the operating system environment, as no special software or drivers are required.

Mounting and Installation
Installation is done by simply connecting devices to the RJ45 ports. Power supply can be via USB or the included power adapter. There are no special mounting requirements; the device can be placed on a flat surface or positioned behind a computer. The Plug-and-Play function ensures no manual configuration is necessary.

Advantages in Operation
Operation is simple and maintenance-free. Automatic speed and duplex detection ensures optimal performance without user intervention. The combination of USB power supply and power adapter offers flexibility in installation. LED indicators allow for quick visual inspection of network status. The warranty period is one year, with the option to extend.