Connecting the USB 3.0 port to a USB flash drive or a hard disk results in an abnormal connection with the wireless network

Problem

Symptom 1: After the USB 3.0 port is connected to a USB flash drive or a hard disk, the wireless network cannot be connected to.

Symptom 2: After the USB 3.0 port is connected to a USB flash drive or a hard disk, a connection is established with the wireless network but the network speed decreases or the network freezes.

Cause

When a USB 3.0 device is used, noises will be made and will affect the normal operations of wireless devices. The USB 3.0 port on Huawei computer hosts is therefore shielded to resolve this issue. Due to the differences in designs of multiple peripheral device vendors and the mainstream architectures, there will be a certain amount of radiation generated by the USB 3.0 device that will affect antennas. If 2.4 GHz wireless communication is abnormal when you are using a USB 3.0 device, try the following solutions.

Solution

Solution 1: Change Power Saving Mode under Wireless Adapter Settings to Maximum Performance to enhance the reception capability of the computer in environments with a weak signal.

Other solutions:

1. Use a USB 3.0 device with a good shielding performance, such as an all-metal shielded USB flash drive, a hard disk box, or a portable hard disk.
2. If a cable is required for the USB 3.0 device, use a cable with a good shielding performance. A USB adapter cable (charging cable) has multiple layers inside and the high-performance aluminum foil and metal braid can effectively reduce the noise radiation and the interference with Wi-Fi networks.
3. Connect to a USB 3.0 device through a docking station.
4. Use a long cable to connect to the USB 3.0 device to keep away from the host and reduce the device's radiation on the host (especially on the LCD and between the LCD and the keyboard, where antennas are located).
5. Use the 5 GHz frequency band for communication. For example, use a 5 GHz router for a WLAN.
6. If verification cannot be improved for external devices, temporarily use the USB 2.0 port.