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#1
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pci-x card in a pci slot
I have just bought a pci-x raid card, and thought that it could be used in my server with pci version 2.2 or 2.3 (both 3.3v and 5v right?) The pci-x card is of course 3.3v, but it will not fit because the card was designet til work on pci 3.3v only. Could the motherboard be modified to work with the card anyway? If the plastic (showed on the bottom of the picture) was removed then the card would fit. But would it work? I can see that the pins (showed in the top of the picture) on the card are not in use where the hole should have been. http://peecee.dk/uploads/0507/11_123.jpg Any thoughts? |
#3
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pci-x card in a pci slot
I have just bought a pci-x raid card, and thought that it could be
used in my server with pci version 2.2 or 2.3 (both 3.3v and 5v right?) The pci-x card is of course 3.3v, but it will not fit because the card was designet til work on pci 3.3v only. Could the motherboard be modified to work with the card anyway? If the plastic (showed on the bottom of the picture) was removed then the card would fit. But would it work? I can see that the pins (showed in the top of the picture) on the card are not in use where the hole should have been. http://peecee.dk/uploads/0507/11_123.jpg I feel a John McEnroe moment coming on... |
#4
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pci-x card in a pci slot
wrote:
I have just bought a pci-x raid card, and thought that it could be used in my server with pci version 2.2 or 2.3 (both 3.3v and 5v right?) The pci-x card is of course 3.3v, but it will not fit because the card was designet til work on pci 3.3v only. Could the motherboard be modified to work with the card anyway? If the plastic (showed on the bottom of the picture) was removed then the card would fit. But would it work? I can see that the pins (showed in the top of the picture) on the card are not in use where the hole should have been. http://peecee.dk/uploads/0507/11_123.jpg Any thoughts? The key is there for a reason. If a card will not fit, because of a mechanical feature like that, the feature is saying "no, it won't work, so don't even try". The PCI slot has several voltage supplies. It can have 3.3V and 5V, suitable for powering the core of the PCI card's main chip. There is a third supply, called VIO, and it is a "design time variable". On existing desktop systems, the motherboard designer chooses to set VIO to 5V, and all the motherboard chips sitting on the PCI bus, use 5V signalling. The motherboard designer buys PCI connectors that indicate, via the key, that 5V signalling is in use and that 5V has been connected to the VIO supply rail. The pictures here might help: http://www.4crawler.com/Developer/Vi...CI/index.shtml If a PCI card doesn't have a 5V slot present on the edge connector, it means the design is not prepared to run at 5V signalling and VIO. Some PCI cards are universal, and can handle signalling at either 3.3V or 5V. They have both slots cut, and can deal with a motherboard where 3.3V was connected to the VIO line, or 5V was connected to the VIO line. There is an example of a PCI chip which is intended for use on a universal card. You can see the chip is both flexible and has constraints, with respect to the core voltage, and the support for 3.3V or 5V VIO situations. When this chip is used on a PCI card, it is possible to cut both slots on the card, at least if the right core voltage (5V) is used. http://www.exar.com/products/17d154-121-110304.pdf Paul |
#5
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pci-x card in a pci slot
Thanks Paul
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#6
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pci-x card in a pci slot
On 10 May 2007 02:02:37 -0700, wrote:
I have just bought a pci-x raid card, and thought that it could be used in my server with pci version 2.2 or 2.3 (both 3.3v and 5v right?) The pci-x card is of course 3.3v, but it will not fit because the card was designet til work on pci 3.3v only. Could the motherboard be modified to work with the card anyway? If the plastic (showed on the bottom of the picture) was removed then the card would fit. But would it work? I can see that the pins (showed in the top of the picture) on the card are not in use where the hole should have been. http://peecee.dk/uploads/0507/11_123.jpg Any thoughts? No you cannot cut out the plastic so it fits and have it work. What you might try instead is drilling four holes in the middle of the card so you can attach a USB cable and run it that way. I hope you realize I'm kidding. |
#7
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pci-x card in a pci slot
I have just bought a pci-x raid card, and thought that it could be
used in my server with pci version 2.2 or 2.3 (both 3.3v and 5v right?) The pci-x card is of course 3.3v, but it will not fit because the card was designet til work on pci 3.3v only. Could the motherboard be modified to work with the card anyway? If the plastic (showed on the bottom of the picture) was removed then the card would fit. But would it work? I can see that the pins (showed in the top of the picture) on the card are not in use where the hole should have been. http://peecee.dk/uploads/0507/11_123.jpg Any thoughts? No you cannot cut out the plastic so it fits and have it work. What you might try instead is drilling four holes in the middle of the card so you can attach a USB cable and run it that way. USB 2.0 of course! |
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