asrock b85m-itx and corsair cx500 power supply - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
Thread Tools
Old 07-12-2014, 09:46 AM - Thread Starter
glantern30's Avatar
Join Date: Jul 2012
Posts: 192
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Liked: 21
asrock b85m-itx and corsair cx500 power supply

hello, Im in the process of building my first gaming computer and i'm looking for a little assistance. I've purchased the motherboard and powersupply listed above, and they are suppose to be compatible. However the problem is when I try to test to see if I can get the power supply to turn on nothing happens. I think the problem is that the asrock b85m-itx instruction says it has an 8-pin ATX12V1 even though when you look at it there's only 4 pins. And the corsair cx500 power supply comes with 1 x 4+4 Pin EPS 12V.

Now per the instructions on the motherboard it says:
"This motherboard pro-
vides an 8-pin ATX 12V
power connector. To use a
4-pin ATX power supply,
please plug it along Pin 1
and Pin 5".

I have no idea what this means and I think this is where my problem lies. I'm checking to see if anyone has ever used these two componets in their builds?? Any help with greatly be appreicated, this is my first gaming pc build and what a pain I tell ya lol. And again both of these components per there websites are compatible but I haven't a clue to get them to work.
glantern30 is offline  
Sponsored Links
Old 07-12-2014, 02:42 PM
AVS Forum Special Member
barrelbelly's Avatar
Join Date: Nov 2007
Posts: 2,235
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 277 Post(s)
Liked: 393
I'm sure some of my more learned brethren in the HTPC area will chime in and steer you in the right direction. But to my eyes you have not provided them with very much information to assist you. For example...What total system spec are you trying to achieve...GPU...CPU...SLI/Crossfire...Storage capacity/scheme/speed...Monitor needs...HTPC video, or just pure gaming...Drive types...Optimization targets like FPS in 720p or less?/1080p?/4k?...2D/3D/VR/ ready?...Audio requirements...and etc. The road to satisfaction is vast with PC gaming. The best hardware of last year or 3 will yield excellent results for games of today and the next 2-4 years. And do it much cheaper! But the new stuff starting to come out will give optimum performance for the next 5 years. Right now your problem could be as simple as there is really nothing for the power supply to turn on or the MB to read. Perhaps MaraficeEye, BD2003 or another esteemed follower of this thread can assist you with the 2 pieces of specific hardware mentioned
barrelbelly is offline  
Old 07-12-2014, 04:16 PM
AVS Forum Addicted Member
DaGamePimp's Avatar
Join Date: Jan 2001
Location: WA State
Posts: 16,275
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 360 Post(s)
Liked: 381
A 4 pin mobo can accept half of the 8 pin (4+4) PS connection in most circumstances.

Simply match one half of the 4+4 PS connection, notice how some are rounded and some are square...


HT = JVC RS40 / Lumagen Radiance / Vivitek 1186 /@133" / Denon x5200 7.3.4 Atmos / B&K 5000 II amp / Boston VR2/VR12/CR67 speakers / Rythmik 12" subs x2 / CV 15" sub / Sony BDP s1000ES / Yamaha DV-S5860 / Toshiba HD-A3 / PureAV PF31
Media Room = Vizio 4K 70" lcd/Denon x4100/Audiosource Amp 100/Klipsch speakers/Velodyne subs/Sony BDP s780/PS4 Pro/X1S/WiiU/PS3/360/Wii/Game PC/Multi-Arcade / #standwithscotty / My HT SLIDESHOW
DaGamePimp is offline  
Sponsored Links
Thread Tools

Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off