WiFi USB Adapter

A WiFi USB adapter allows non-WiFi-capable devices such as older PCs, gaming consoles, or smart TVs to integrate into an existing WiFi network without the need for a LAN cable. It is essential that the devices have a corresponding interface, in this case, a USB port. WiFi USB adapters are external WiFi adapters, unlike the internally built PCI cards found, for example, in modern notebooks. Due to their small size and user-friendly handling, WiFi USB adapters are a popular solution when connecting non-WiFi-capable devices to a WiFi network.

WiFi USB adapters come in two main types: sticks, which resemble regular USB sticks and may also have an external antenna, and those with a housing that can be independently positioned and connected to the device via a USB cable. The latter type is usually more powerful and allows optimal positioning for improved range. They resemble small routers and can be powered either through the USB port or an external power supply.

As there are significant price differences among WiFi USB adapters, quality also varies. Depending on the requirements of the device, one should decide how much to invest in the purchase. Not all WiFi USB adapters support all WiFi standards, with IEEE 802.11 being the common standard today, offering different transmission rates depending on the version. While 802.11a, b, and g achieve transmission rates of 54 Mbit/s, which is relatively low, the most prevalent is 802.11n with rates between 150 and 600 Mbit/s. WiFi USB sticks supporting the best standard, 802.11ac, capable of transmitting data up to 1300 Mbit/s, are relatively expensive. Generally, adapters are compatible with the lower standard but not vice versa. The WiFi router dictates the standard used in the WiFi network, and it is advisable to choose a corresponding device, even if it is more expensive.

When using a WiFi USB adapter, ensuring network security is crucial to prevent unauthorized access and potential infiltration of connected devices by external parties. The latest encryption protocol, WPA2, is currently used for this purpose and is supported by most modern devices. Additionally, setting a secure password is essential for network security. The router should be configured to require manual registration for new devices attempting to join the network, making it more challenging for hackers to infiltrate the WiFi network.

The range of a WiFi USB adapter is significantly influenced by external factors and the WiFi standard used, similar to a router. If there are significant obstacles in the home, they should be removed, or a WiFi repeater can be used. Alternatively, a WiFi USB adapter with an external antenna or housing can address this issue. The latter can be better positioned, leading to a noticeable increase in range.

If there is no connection or a secure connection to the wireless network despite using a WiFi USB stick, it may be due to insufficient range, a low WiFi standard, or potential damage to the stick. External antennas, even without visible damage, can be quite susceptible. Investing in devices from reputable manufacturers is usually worthwhile, as they undergo better processing and quality assurance, often resulting in greater durability. Quality WiFi USB sticks are typically better equipped and support higher WiFi standards, allowing for significantly higher transmission rates when combined with a corresponding WiFi router. Ultimately, the choice of a WiFi USB adapter depends on individual requirements and expectations from the device. If uncertain, seeking advice can quickly determine the most suitable device.