Asus z87 pro back USB ports not working suddenly

[Dark Knight_TJ]

Hi guys!. I have this Asus motherboard Wich back usb ports stopped working suddenly . I connect something and is not detected , just receives power but nothing appears in OS. I checked with multimeter in a working USB and I have 5v ,gnd and 0.025-0.030mv from data lines . Tested in the ones that are not working and I got same measures except for data líneas Wich are lower , about 0.010 MV or less . I think I have some failed "filters" ics Wich are marked as 027 30ECG but I didn't find any matches . Does anyone knows what are and what part number is needed please?. Thanks !

[Yousuf]

Re: Asus z87 pro back USB ports not working suddenly

Hi,
Can you please post the number of the isolator ICs ?

If you are adventurous, you can switch the same IC from a working USB port to the non-working one and see if it works. Another option is to take the D+ D- (for USB2) before the chip, connect to a USB connector and see if there is any communication.

[bashatm]

Re: Asus z87 pro back USB ports not working suddenly

Does anyone knows what are and what part number is needed please?. Thanks !

LXES4XBAA6-027 Murata Electronics
ESD Suppressors / TVS Diodes 0.25pF 6V 6ch EMI Suppression Fltr