Nicolas George <geo...@nsup.org> wrote: > Serkan Kurt (HE12025-04-06): > > Hello. A USBA (ss) wireless mouse is connected to the laptop. When I > > connect a WD Element 1 TB or WD Element 4 TB external disk to the > > other USBA (ss) port, the working distance of the mouse drops to > > about 0.5 meters. Normally 10 meters. The laptop has 2 USBA (ss) > > ports. The two ports are side by side. Could there be a hardware > > problem? Do you have any suggestions for solving the problem? > > Two experiments you need to run:
Nicolas is quite right if you want a full understanding. > Insert a USB hub with its own power supply, first between the computer > and the external drive, second between the computer and the wireless > mouse. If it changes something you know it is because of power supply > issues. The above is the most likely cause. The disk perhaps takes nearly all the available power that is available (WD don't seem to publish power figures! :( ) A powered hub will supply all the power it needs without loading your laptop down and so interfering with the power available to your mouse. > Insert a long male-female cable between the computer and the drive and > one between the computer and the receiver for the mouse and place them > far apart. If it changes something you know it is probably because of > radio interferences. This is also a possibility but is much less likely since it would require a fault in the interference generation and suppression in both devices.
