front usb ports not recognising device

  • Thread starter Thread starter brian
  • Start date Start date
B

brian

Hi,
i have just put together a system using an asrock k7s8xe
motherboard,and win xp pro,
which works fine except that the front usb ports will not recognise
any usb device(camera/card reader etc)
the 4 ports at the rear work fine with the camera etc

the motherboard handbook lists the pin out for the front panel as:
1/ usb_pwr/p-5/p+5/gnd
2/ usb_pwr/p-4/p+4/gnd (arranged in two rows of four pins (plus one
pin marked"dummy" in the mobo handbook)
and the case handbook lists the pin out as:
red(vcc+) vregfpusbpwro/front panel usb power(ports 0.1)
red(vcc+) vregfpusbpwro/front panel usb power(ports 0.1)
green (-d) usb_fp_po_front panel usb port 0 negative signal
green (-d) usb_fp_p1_front panel usb port 1 negative signal
white (+d) usbfppo+front panel usb port 0 positive signal
white (+d) usbfpp1+front panel usb port 1 positive signal
black(ground)
black(ground

i have connected the wiring as:(1) red to usb_pwr
green to p-5
white to p+5
black to gnd

(2) red to usb_pwr
green to p-4
white to p+4
black to gnd
have i got this right ? or am i reading it wrongly,

any suggestions greatly appreciated,thanks
 
brian said:
Hi,
i have just put together a system using an asrock k7s8xe
motherboard,and win xp pro,
which works fine except that the front usb ports will not recognise
any usb device(camera/card reader etc)
the 4 ports at the rear work fine with the camera etc

the motherboard handbook lists the pin out for the front panel as:
1/ usb_pwr/p-5/p+5/gnd
2/ usb_pwr/p-4/p+4/gnd (arranged in two rows of four pins (plus one
pin marked"dummy" in the mobo handbook)
and the case handbook lists the pin out as:
red(vcc+) vregfpusbpwro/front panel usb power(ports 0.1)
red(vcc+) vregfpusbpwro/front panel usb power(ports 0.1)
green (-d) usb_fp_po_front panel usb port 0 negative signal
green (-d) usb_fp_p1_front panel usb port 1 negative signal
white (+d) usbfppo+front panel usb port 0 positive signal
white (+d) usbfpp1+front panel usb port 1 positive signal
black(ground)
black(ground

i have connected the wiring as:(1) red to usb_pwr
green to p-5
white to p+5
black to gnd

(2) red to usb_pwr
green to p-4
white to p+4
black to gnd
have i got this right ? or am i reading it wrongly,

any suggestions greatly appreciated,thanks
Click to expand...

sorry if not reading it right, because it looks okay. have you got the 0 and
1 cables in the right place ? i.e.

red/p0-/p0+/gnd
red/p1-/p1+/gnd

also, some mobo's have a bios setting for number of usb ports, may need
changing to allow six ports
 
frankie.boy said:
sorry if not reading it right, because it looks okay. have you got the 0 and
1 cables in the right place ? i.e.

red/p0-/p0+/gnd
red/p1-/p1+/gnd

also, some mobo's have a bios setting for number of usb ports, may need
changing to allow six ports
Click to expand...

Hi, thanks for the suggestions,
i have it connected in the way you suggest,
the only reference i can find in the bios is "usb ports - enabled"

there is a jumper on the mobo with 3 pins labelled in the manual as
ps2_usb_pwr1

pins1&2 give +5v and pins 2&3 give +5sb"(to enable +5vsb(standby) for
ps/2 or usb wake up events",
i have tried this jumper in both positions but get the same reults
with both
 
Hi, thanks for the suggestions,
i have it connected in the way you suggest,
the only reference i can find in the bios is "usb ports - enabled"

there is a jumper on the mobo with 3 pins labelled in the manual as
ps2_usb_pwr1

pins1&2 give +5v and pins 2&3 give +5sb"(to enable +5vsb(standby) for
ps/2 or usb wake up events",
i have tried this jumper in both positions but get the same reults
with both
Click to expand...

problem solved! it was the wiring instructions that came with the
case that were incorrectly printed,

i exchanged the green and white wires and end of problem,

thanks anyway.
 
Back
Top