AVM FritzBox 4020 2.4 GHz router review, is it worth it?

The AVM FritzBox 4020 (FB-4020) router released in 2016. It is powered by Qualcomm Atheros QCA9561 @ 750 MHz chipset, 128 MB of RAM and 16 MB of flash. The N450 router is compatible with IEEE 802.11b/g/n standards, and the maximum speed that you can get with FritzBox 4020 is 450 Mbps. The router has 1 x 10/100 Mbps WAN and 4 x 10/100 Mbps LAN ports.

The FritzBox 4020 is a basic Wi-Fi router that provides reliable wireless connectivity for small homes or apartments. The USB connectors on the FritzBox 4020 router add versatility to your network by enabling file sharing, media streaming, printer sharing, and other USB-enabled functionality. AVM is widely recognized as a reputable and established manufacturer of networking equipment.

Table of contents:

• AVM FritzBox 4020 specifications
• AVM FritzBox 4020 pictures

AVM FritzBox 4020 (FB-4020) specifications

Body

If you have limited space available for your router, such as in a small apartment or office, the dimensions can determine whether it can fit in the designated area or not. It's important to consider the physical size of the router, including its height, width, and depth, to ensure it can be accommodated in your space.

System

The Qualcomm Atheros QCA9561 @ 750 MHz CPU, combined with other factors such as RAM capacity and firmware optimization, determines the overall performance and responsiveness of the router. The 128 MB of RAM enables the router to handle multiple tasks and processes concurrently. It allows for the efficient switching and allocation of resources among different processes running on the router, facilitating multitasking and ensuring smooth operation.

The flash memory in a AVM router is different from the volatile memory (RAM) that is used for temporary storage of data while the router is powered on. Flash memory of the FritzBox 4020 retains its data even when the router is powered off, allowing the router to maintain its firmware and configuration settings across reboots. To upgrade the firmware of the FritzBox 4020 router, you typically need to visit the manufacturer's website, locate the specific model of your router, and download the latest firmware version provided. The firmware upgrade process may vary depending on the router model, but it often involves accessing the router's web-based administration interface and uploading the downloaded firmware file. The AVM provides the appropriate power supply (12 V / 2.5 A) that matches the voltage requirements of the router. The power supply unit is designed to deliver the correct voltage to the router, ensuring its proper operation.

Network

Like many modern routers, the AVM FritzBox 4020 supports a variety of features and technologies to enhance your network connectivity and security. The majority of networking equipment, including routers, switches, and other network devices, is designed to support IPv4. The FritzBox 4020 router is also compatible with IPv6. IPv6 provides a significantly larger address space and offers various enhancements and improvements over IPv4.

The FritzBox 4020 has 4 x 10/100 Mbps LAN and 1 x 10/100 Mbps WAN ports. The LAN ports of FritzBox 4020 router are numbered and are used to establish wired connections between the router and devices such as computers, gaming consoles, smart TVs, network-attached storage (NAS) devices, and other network-enabled devices. WAN ports are used to connect the router to your internet service provider (ISP). They typically use Ethernet cables or fiber optic connections to establish a high-speed link between your local network and the wider internet.

If you have a high-speed internet plan with speeds exceeding 100 Mbps, you may experience a bottleneck in wired connections due to the limitation of the Fast Ethernet ports on the FritzBox 4020 router. By connecting the 3G/4G USB dongle to the FritzBox 4020 router, you can share the internet connection with multiple devices on your local network. This allows multiple devices, such as computers, smartphones, or smart home devices, to access the internet simultaneously.

Wireless

This router has 2 x 3 dBi, internal antennas. Many modern routers feature multiple antennas and use Multiple-Input Multiple-Output (MIMO) technology. This technology enables simultaneous transmission and reception of multiple data streams, increasing overall throughput and improving the Wi-Fi performance. This router is 2.4 GHz capable. The 2.4GHz band refers to the portion of the radio spectrum between 2.400 and 2.4835 gigahertz. This frequency range is unlicensed and globally available for various wireless applications, including Wi-Fi.

The FritzBox 4020 is a Wi-Fi 4 (802.11n) router. N routers may have a more limited range compared to newer Wi-Fi standards, making them less suitable for larger homes or offices where Wi-Fi coverage is a concern. The N450 is a performance indicator that represents the router's theoretical maximum speed. The theoretical maximum speed (450 Mbps) represents the highest data transfer rate that the router is capable of achieving under ideal conditions.

The maximum TX power of FritzBox 4020 router is 20 dBm. Adjusting the TX power of a router can be useful in situations where you want to optimize the Wi-Fi signal strength and coverage. The FritzBox 4020 router offers several security protocols: WPA, WPA2. The WPA2 (Wi-Fi Protected Access 2) was introduced as an improvement over WEP and provides stronger security. If WPA3 is not available, WPA2-Personal with AES encryption is still considered secure. Once the guest network is set up on your AVM FritzBox 4020 router, your guests can connect to it using the specified SSID and password. They will have internet access, while being separated from your private network.

Connectivity

USB ports can offer additional functionality depending on the router's capabilities. The USB 2 port has a maximum theoretical data transfer rate of 480 megabits per second (Mbps), which is equivalent to 60 megabytes per second (MB/s). The FritzBox 4020 router has print server functionality. With a USB print server, you can manage printer settings, monitor print queues, and control access to the printer from a centralized interface. This can simplify printer management and administration tasks. The FritzBox 4020 router allows you to schedule automated backups of your important data to the connected USB storage device.

Administration

The AVM router setup panel is accessed through a web browser. Connect your computer to the FritzBox 4020 router via Wi-Fi or Ethernet cable. In the address bar of the web browser, type in the 192.168.178.1 IP address. Regularly changing the password is a good security practice to protect your network and devices from unauthorized access. It is also recommended to use strong, unique passwords for other devices and online accounts connected to your network for enhanced security. By changing the default password, you improve the security of your router and reduce the risk of unauthorized individuals gaining control over your network. It helps prevent unauthorized access to your router's settings, network configurations, and sensitive information.

The specifications above are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the AVM FritzBox 4020, then don’t hesite and signal the problem to us.

AVM FritzBox 4020 (FB-4020) pictures

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