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10 led power light

post #1 of 4
Thread Starter 
I would like to connect 10 led's to the power led connector on my motherboard will this work and do I need to put resistors on them at all.
post #2 of 4
You mean the motherboard's PWR_ON and Disk activity on the front panel pins? Those are at 3.3v. If you add more lights in serial or parallel, it will change the resistance so you will probably have to do a mix.

More important question is what is the max current on those pinouts? You can also just connect to the 12v or 5v line as well (with resistors).
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
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Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
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post #3 of 4
Thread Starter 
thanks for the reply had not thought of using the 5v or 12v from the power supply
post #4 of 4
Yeah, don't connect more LEDs to the PWR LED header on your motherboard. It'll draw too much current. 1-2 is fine. 10 would be bad. Attaching to any molex or SATA power connector will do exactly what you need it to do- light up when the system is on. Use 5v and get the proper resistors for each LED. Use http://led.linear1.org/led.wiz to calculate.
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