FRITZ!Box 4020 Service - Knowledge Base
Wireless connection is only established with 195 Mbit/s instead of 450 Mbit/s
When your wireless device (for example a notebook, smartphone, game console) establishes wireless connections (WiFi) to the FRITZ!Box according to the wireless standard 802.11n, the throughput does not exceed 195 Mbit/s.
- A throughput of 450 Mbit/s can only be achieved when channels with a bandwidth of 40 MHz are used. Some wireless devices do not support channel widths of 40 MHz or must first be configured to do so.
Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.
Simply proceed as described below. After each measure, check whether the issue persists.
1 Configuring the wireless device to use 40 MHz channels
Perform the following step if the computer's wireless network adapter or the wireless device supports wireless channels with bandwidths of 40 MHz:
Note:You can find information on configuring the device in its manual, or consult its manufacturer directly.
- Configure the wireless network adapter or the wireless device so that it uses wireless channels with bandwidths of 40 MHz.
You can configure many Intel wireless network adapters for channels with bandwidths of 40 MHz. In order to do so, call up the properties of the wireless network adapter in the Windows Device Manager and select "auto" for "802.11n Channel Width for band 2.4":
2 Checking the event log of the FRITZ!Box
- Click "System" in the FRITZ!Box user interface.
- Click "Event Log" in the "System" menu.
- Select "Wireless" from the drop-down list.
- Check whether the message "Wireless LAN transmission quality increased by reduced channel bandwidth [...]" is displayed.
- If the message is displayed: