DFI P5BV3+ (VIA MVP3) and USB problems

Discussion relating to Socket 7 hardware.
spacemarine
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DFI P5BV3+ (VIA MVP3) and USB problems

Post by spacemarine »

Hi,

I cant use usb ports on the P5bv3+

I installed in win 98 correctly all via drivers (4in1 ver 4.35 and usb driver 1.10), upgraded to last bios (january 2000) and used an usb bracket from an asus motherboard. I activated USB controller in bios and is recognized in windows
The bracket has the same pin position of the DFI, according to both manuals, and is correctly connected (only 7 pins, impossible to invert as mistake)

I have tried 2 mp3 readers, 1 usb flash key and an usb steering wheel:
none of the items received any power from the port, and none as been recognized as "something just connected" in windows.


Do you have any idea about how to fix it?

And no, the solution is not using a separate pci usb card, i need the slots for other things.
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RE: DFI P5BV3+ (VIA MVP3) and USB problems

Post by Jim »

Check the pinout of the on board port in the motherboard manual. I know that an Asus P5A-B has the onboard wiring configuration different from what you usually find with those ports; and you have to pull the wires out of the plug and rearrange them. Also I have one of those boards complete with manual. Just checked the manual. It takes a nine pin port not 7; unless yours is a different rev. with a different USB port.

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spacemarine
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Post by spacemarine »

Mine is a p5bv3+ rev B5, the pins are 9 right, i counted 2 less :D , and pin out is the same of my asus a8n-e bracket. a7n8x-e use same pins too.
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KachiWachi
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Post by KachiWachi »

Are you getting +5V on the designated power pins?


Thanks.
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spacemarine
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Post by spacemarine »

KachiWachi wrote:Are you getting +5V on the designated power pins?


Thanks.
Well, the pinout on the manual says yes, but my devices are not receiving any power (mp3 usually turn on when connected but here it doesn't, same for the steering wheel). Anyway I don't have a tester for checking directly on the motherboard.
spacemarine
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Post by spacemarine »

Asus manual says that the bracket has the following pinout:

+5v / +5v
port1- / port2-
port1+ / port2+
ground / ground
---------/ NC

What does NC mean?
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Post by Jim »

Not Connected. That might be your problem if the DFI requires the extra ground and your port hasn't got it.
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DFI K6BV3+/66 Rev B2 (2 Meg) w/ 2x28mm Chipset Fans
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spacemarine
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Post by spacemarine »

Mmm, but the strange thing is that there's a pin there, what's the purpose of having a pin if it is not connected?

Anyway, there is a way to convert it to a "ground" pin?
What exactly ground does? The purpose of data and power pins are clear to me, but i dunno what ground ones are meant to do.
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Post by cake »

Ground provides a zero reference for other power pins (among other things), +5V for instance is just a differential from ground.
That's why some use +5V as ground and +12V as power when connecting fans to get them to spin slower (less noise etc), that way you'd get a +7V diff.

As to the extra NC pin in the connector, the scanned manual Jim supplied states it's used as a key for the connector to make sure the it's not connected in reverse. The purpose of this is to make sure PWR and GND pins are not reversed, which can lead to all sorts of trouble like frying the device connected to the USB port etc.

Hope this sheds some light on the matter.
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spacemarine
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Post by spacemarine »

Thanks for the info. :D

Anyway it seems very hard to mod the bracket that im actually using, because no sort of wire starts from the nc pin that could be connected to another ground.

I have to search for a completely new bracket on ebay, and does not seems easy to find the right one, seems that the asus pin configuration has become a sort of "de facto" standard.
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Post by Jim »

I have lots of them. Foresight. Bought a bag of thiry of them years ago. You want a nine pin one, no prob. Send me your address and I'll send you one for the cost of shipping.
Superpuppy 3
K6-3+ 450 ACZ (6x100)
DFI K6BV3+/66 Rev B2 (2 Meg) w/ 2x28mm Chipset Fans
2x256 Meg PC 133 Hynix SDRAM
1x 20G Maxtor (7200)
2x 80G Maxtor (7200) Ducted w/ 2x486 Fans Mount
52/24/52/16 LG CDR/RW/DVD
8/4/3/12/24/16/32 LG Super Multi
ATI 9000 aiw Radeon AGP
SB Audigy 1 MP3 Sound
CMD 649 IDE Controller
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spacemarine
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Post by spacemarine »

Check ur PMs :D
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KachiWachi
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Post by KachiWachi »

Get yourself a DVM and check for the presence of +5V.

If you don't have this, no amount of cabling "fixes" will help you.


Thanks.
Moderator - Wim's BIOS

PC #1 - DFI 586IPVG, K6-2/+ 450 (Cyrix MII 433), 128 MB EDO. BIOS patched by Jan Steunebrink.
PC #2 - Amptron PM-7900 (M520), i200 non-MMX, 128 MB EDO
PC #3 - HP8766C, PIII-667, 768 MB SDRAM
PC #4 - ASUS P3V4X, PIII-733, 256 MB SDRAM
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PC #7 - Dell Dimension 4600i, P4-2.8 GHz, 512 MB PC2700 DDR
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Post by Jim »

That's True
Superpuppy 3
K6-3+ 450 ACZ (6x100)
DFI K6BV3+/66 Rev B2 (2 Meg) w/ 2x28mm Chipset Fans
2x256 Meg PC 133 Hynix SDRAM
1x 20G Maxtor (7200)
2x 80G Maxtor (7200) Ducted w/ 2x486 Fans Mount
52/24/52/16 LG CDR/RW/DVD
8/4/3/12/24/16/32 LG Super Multi
ATI 9000 aiw Radeon AGP
SB Audigy 1 MP3 Sound
CMD 649 IDE Controller
NEC USB 2 Card
spacemarine
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Location: Civis Romanus Sum

Post by spacemarine »

KachiWachi wrote:Get yourself a DVM and check for the presence of +5V.

If you don't have this, no amount of cabling "fixes" will help you.


Thanks.
DVM stay for? An elettric tester?
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