PC Hardware forum

General discussion


by pascal-var / January 30, 2007 2:43 AM PST

I want to connect the open case warning cable to motherboard but
i confused because there are two rows of pins with a jumper in the first row and near to this pins says OPEN CAS WARNING.
How can i connect it?
My motherboard is Albatron PX875P PRO

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by TheSleep / January 30, 2007 8:01 AM PST

I dont own this mobo but may be of some help.
The mobo's OCW pins are probably jumped already to prevent it from allowing the computer to "power up". To use the OCW you would simply remove the jumper from those pins and connect your wires to the same pins. The mobo should indicate which row is + and which is -. Generally you would connect the darker wire to the + "positive" row and the white to the - "negative" row. Now the button for the panel would require to be pushed in to de-activate the prevention of "power up".
Hope that helped ya out! Happy

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open case warning
by pascal-var / January 31, 2007 7:19 AM PST

Thank you very much for your response.
I connected the cable to the mobo's pins with the correct polarisation
and i can't find the specific option on the Bios menu, i did search the whole bios's menus. But what's the reason for the open case warning ability? I have to say that 6 months before i upgraded the bios firmware.

However thank you.

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by TheSleep / February 3, 2007 6:04 AM PST
In reply to: open case warning

The open case warning is what it says it is. Its not required nor needed. As long as the jumper is set to deactivate it, you dont need to use it. It basically just prevents the computer from powering up while the case is open, which could cause electricution if the inside components are touched. I build pc's regularly and never use this option. If you ask me its just for idiots that dont know that electricity can kill you. If you plan on selling your pc to an idiot maybe you should use it. lol. I checked your manual and it's not real detailed about the OCW, just shows a pic of the MOBO. As for the BIOS, most likely it doesnt have a setting in it for this. Either the button that the wires go to has to be pressed (which is done by the Tower Panel) or the jumper has to installed. When either one or the other of these two or absent it cuts off all electricity to the motherboard. If your getting power now then you really dont need to do anything with it.

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case open warning
by pascal-var / February 3, 2007 6:26 AM PST

OK now i understood that this cable does the same job like PSU switch.
Me too i built my 2 PC's and every time i want to open the case first turn off the electricity to PSU.
Thank you.

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