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Network cards for specialised applications to customise connectivity

In many network environments, optimised connectivity and transmission performance are essential to meet the requirements of modern IT infrastructures and ensure the necessary availability of data and applications. In addition to the widely available solutions based on Ethernet technology with both 1G and 10G (Gigabit) RJ45 network cards and corresponding switches, other network technologies are available for various specific application areas. This means that network technology tailored to specific requirements can help to provide the necessary connectivity even in challenging environmental conditions.

High signal quality in difficult environments - RJ48 Network Cards

The RJ48 network technology is a special variant of the RJ45 standard used to connect network infrastructures. Compared to the RJ45 connector, RJ48 has some unique features and offers advantages in certain applications. It is important to note that RJ48 and RJ45 are not directly compatible.

RJ48 uses differential signals for transmission, also known as differential signalling. This is a method where the signal is transmitted as the difference between two conductors, resulting in optimised noise suppression and increased resilience to interference. This ensures better signal quality when networks operate in environments with a high potential for electromagnetic interference, such as near high-voltage power lines. For additional protection, RJ48 network cables typically use shielding to further reduce external influences on the signal being transmitted.

Server clusters for optimised performance and availability

To handle workloads as efficiently as possible with high scalability and availability, multiple servers can be combined in a clustered network. The cluster controller provides the necessary network connections and performs specific functions to control communication and coordinate the servers within the cluster. The expansion card is installed into a slot on the motherboard or in the PCIe riser (PCI-Express) to enhance the functionality of server clusters and performs different tasks depending on the model and existing infrastructure.

• Load Balancing - Evenly distributes and redirects the load of computing and data traffic across the servers in the cluster to make the best use of system resources and improve overall cluster performance.
• Failover Support - If individual servers fail due to system errors or defects, the disruption is detected and traffic is redirected to a functioning server in the cluster. This allows operations to continue seamlessly without affecting the availability of data and applications.
• Cluster Management - Cluster controllers provide a range of management tools to enable efficient administration of the server cluster. By configuring servers, monitoring resource usage, collecting performance data, and diagnosing and resolving faults, it is possible to ensure smooth, continuous operation with maximum performance.

Flexible network access with wireless technology

Wireless Local Area Networks (WLAN) enable employees to access company data, e-mail and applications without a traditional cable connection. They can move freely around the office or within specific work areas without being tethered to a network cable, enabling flexible working and increased mobility. Limited guest access can also be set up to quickly and easily connect visitors, customers or temporary staff without the need to run cables.

However, it is important to consider security to prevent unauthorised access. Various security protocols, such as WEP (Wired Equivalent Privacy) and WPA (Wi-Fi Protected Access), can be used to encrypt the connection, and restricting access to authorised devices helps to increase network security in the wireless network.

The required connection is established using Wi-Fi (wireless fidelity) network cards, also known as Wi-Fi adapters or Wi-Fi cards. These are available both as internal expansion cards and as external adapters to connect devices such as laptops and tablet PCs wirelessly to Wi-Fi access points. Depending on the model, different versions of the IEEE 802.11 wireless standard are supported:

• 802.11a
• 802.11b
• 802.11g
• 802.11n
• 802.11ac
• 802.11ax

These standards define the transmission speeds, frequency bands and security protocols for wireless communications, with Wi-Fi 6 (IEEE 802.11ax) being the latest version offering the highest transmission performance.

Another application for Wi-Fi technology is IoT connectivity (Internet of Things). Smart IoT devices can be integrated and controlled on the corporate network, collecting data and communicating with each other without direct human interaction. For example, these systems can use sensors to collect information about room temperature, occupancy and lighting in offices and conference rooms, and respond accordingly to save energy or improve comfort. A fast and secure Wi-Fi network can therefore support a range of projects that contribute to the modern management of workplaces and processes.

Refurbished network cards for special requirements at affordable prices - ServerShop24

If you're looking for cost-effective solutions to adapt your network infrastructure to specific requirements, used, carefully checked network cards from our online shop are often an ideal and sustainable alternative to new products. An excellent price-performance ratio and fast availability are two notable advantages. In addition, you will often find older and rare network adapters in our shop, which you can receive as urgently needed spare parts with short delivery times due to fast shipping from our warehouse.
Since 2010, we are your reliable partner for professionally refurbished used servers, network equipment, workstations and storage systems. A wide range of pre-configured and ready-to-ship systems from well-known manufacturers such as HPE, Dell, Lenovo and Fujitsu is complemented by a variety of spare parts and components that enable individual configurations and customised solutions. Our friendly and experienced support team is available to answer any questions you may have about our products and your order. Contact us - we take care of your request!