View original (French)

+5V/+5VSB ?

Stela Posted messages 61 Status Member -  
 Guigui -
Hi everyone
I'm setting up a motherboard and I have two possible options to configure my USB ports with the jumper, either +5V or +5VBS. What is the difference and what do they mean?
If anyone knows?

3 answers

  1.
    mwa45 Posted messages 267 Status Member 113
     
    I know it's old but it might help some people!
    First of all, +5vsb means +5 Volt StandBy, it's a signal. But be careful, it is by no means OPTIONAL, it keeps the PC powered even when it is off. If there is no +5vsb, the PC cannot turn on, you would sometimes need to reconfigure the entire BIOS, but in fact, without this +5vsb the PC cannot function at all.

    But in the context of USBs, if you configure your USB ports to be connected to +5vsb, your keyboard and mouse will remain powered constantly, for example. This means that even when off, you would see the light on your mouse. This also allows, if I'm not mistaken, to "wake up" your PC with the mouse or keyboard when it is in sleep mode. But indeed, at the USB level, +5vsb is not mandatory.

    --
    ---Aspiring IT Technician---
    45
    1. phcchp
       
      Merci
      1
    2. Guigui
       
      Thank you for the information.
      0
  2. titinho
     
    Hello,

    the +5V is used to power the USB ports
    the +5Vsb is an optional power supply that allows the PC to turn itself back on when it's off, for example with an external modem when receiving a fax. It's called a standby power supply.
    11
    1. Stela Posted messages 61 Status Member 1
       
      ok thanks, it's cool.
      0
  3. Stela Posted messages 61 Status Member 1
     
    Is there really no one who can help me?
    0