USB 2.0 Internal Card Reader Connection?

vbimport

#1

How might a USB 2.0 internal card reader with connector made for connection to 9 pin motherboard header connection in an older PC with header connection that’s different? The PC also has a PCI USB 2.0 adapter card, but that card has only the standard USB 2.0 type A connector and a 4 pin header connection. Does anybody make an adapter to connect the 9 pin plug of the card reader to the PCI adapter card, or is it possible to replace the 9 pin plug with a standard type A USB 2.0 connector? I’ve done Google search for such an adapter, but all I find is USB to serial 9 pin adapters.


#2

Hello

The internal mainboard USB connectors are not standardized. For this reason there is not a adapter available in most cases. You may be lucky and find one, but I doubt. If the pinning of the internal USB connector is described in your mainboard user manual you can build your own cable.
But be aware, if you interchange the buspower lines you can trash your mainboard and cardreader. For this reason you should really really know what you do.
The easiest way is using a internal USB cardreader having a USB-B plug and a USB PCI card having an internally mounted USB-A plug.


#3

Hi,[quote=bevills1;2020856]How might a USB 2.0 internal card reader with connector made for connection to 9 pin motherboard header connection in an older PC with header connection that’s different? The PC also has a PCI USB 2.0 adapter card, but that card has only the standard USB 2.0 type A connector and a 4 pin header connection. [/quote]What is this 4 pin header for? This might be either for additional power (using a floppy connector from the PSU) or for connecting USB devices. Are there any markings near that connector?

Does anybody make an adapter to connect the 9 pin plug of the card reader to the PCI adapter card, or is it possible to replace the 9 pin plug with a standard type A USB 2.0 connector?
Something like this: http://www.pollin.de/shop/shop.php?cf=detail.php&pg=OA==&a=OTUwOTcyOTk=&w=Njg4OTM5&ts=100
http://www.pollin.de/shop/downloads/D720940D.PDF

For one USB device or port, only a 4 pin header is needed. Maybe the cable of your card reader has only 4 wires, so only 4 of the 9 pins of the connector are occupied.

Michael


#4

Even if I could connect to mobo header, I’d not want to because mobo only supports USB 1.1. I’ve searched for internal reader with USB B at 1 end and USB A on other end which would connect to USB A connector on PCI card, but the only ones I find with such connections are external ones with all the internal ones having the plug to connect to mobo header.

I’m unsure what the header on PCI card is for but can only guess it’s for 4 pin USB plug similar to 9 pin plug of current reader because the 4 pin side of current plug will fit onto PCI card header, and current reader has 8 wires.


#5

This might be complete irrelevant, but the 9 pin connector reminds me of a “USB3” pic some time ago. :slight_smile:
Found here.
.



#6

An adapter that would work was found, but cost is $21 which is more than cost of another reader. I was unable to find an internal reader that would connect to internal USB connection on the PCI card, and I decided to get an external multi card reader that also has 3 USB ports on it for 6 bucks less than the $21 adapter cost.


#7

… uhm …
What about those 4 pins on your card, and what about the wires of the cable I asked for in my previous post? :confused:


#8

[quote=pinto2;2023705]This might be complete irrelevant, but the 9 pin connector reminds me of a “USB3” pic some time ago. :).[/quote]Normaly, USB connectors on mainboards have 8 or 9 pins to feed two USB ports. This is according to some Intel-invented guidelines.

Michael


#9

[QUOTE=mciahel;2023986]Normaly, USB connectors on mainboards have 8 or 9 pins to feed two USB ports. This is according to some Intel-invented guidelines.

Michael[/QUOTE]yeah some mobo’s come with adapters for 2 ports (individual pins) and/or some cases have plugs for made for 2 ports.


#10

The last sentence of post #4 answers mciahel’s question about 4 pins on PCI card, and the card reader has 5 wires on 5 pin side of plug and has 4 wires on 4 pin side of plug. Also the 4 pin side of plug will connect to 4 pins on PCI card but only 1 way because the 4 pins of PCI card are too close to USB connection on PCI card to allow connection of 4 pin side of plug the other way. I did try connection to 4 pins on PCI card the way it does connect, but card reader isn’t recognized when connected that way.


#11

Ah, okay.
Thanks.


#12

Like you i have been looking for the 9 pin header adapter

Rosewill.com part # RC-100 $10
http://www.rosewill.com/products/713/productDetail.htm
http://www.newegg.com/Product/Product.aspx?Item=N82E16815166001

another link found on … lost the forum link oops, but here is the part

adapter link $14
http://www.usbfirewire.com/Parts/rr-usb2-4-op.html