Safe to plug 2 fans into 1 mobo header?

Toggle sidebar Toggle sidebar
G

GregoryHinojosa

Reputable
Oct 9, 2016
19
0
4,510
Motherboard: https://www.gigabyte.com/Motherboard/GA-Z170-HD3P-rev-10#ov
Fans: https://www.amazon.com/Corsair-Blue-Static-Pressure-Cooling/dp/B00L64O63G/ref=pd_rhf_gw_s_cp_15?_encoding=UTF8&ie=UTF8&pd_rd_i=B00L64O63G&pd_rd_r=HFTTKCMHH2YPX2MM603C&pd_rd_w=IC1tj&pd_rd_wg=5MzlW&pf_rd_r=HFTTKCMHH2YPX2MM603C&pf_rd_s=recent-history-footer&pf_rd_t=gateway&psc=1&refRID=HFTTKCMHH2YPX2MM603C

Would like to know if its safe to plug 2 fans into one port without any issues and if its safe to do it on other ports as well, so id have 6 fans plugged into 3 ports.

EDIT: Just realized this thread is under graphics cards and i dont know how to change this :/ Apologies
 
Solution
raisonjohn


Yes. The Corsair SP120 LED fan only draws 0.26A (http://www.corsair.com/en-us/air-series-sp120-led-blue-high-static-pressure-120mm-fan). Motherboard fan headers are...
Sort by date Sort by votes
P

pete_101

Splendid
Aug 2, 2014
2,988
129
23,890
Yes you can. How were you going to connect the two to the one header?
You either can get a Y cable, or do what I did. I soldered the wires from one fan onto another, BUT only the red and black wires of the 2nd fan. Do not connect more than one yellow wire or the fans will run at the wrong speed.....if you buy a Y cable, it will do this for you.
 
Upvote 0 Downvote
raisonjohn

raisonjohn

Expert
Ambassador
Feb 22, 2015
4,102
90
39,040


Yes. The Corsair SP120 LED fan only draws 0.26A (http://www.corsair.com/en-us/air-series-sp120-led-blue-high-static-pressure-120mm-fan). Motherboard fan headers are typically rated 1A max. (some special headers on selected motherboards are rated much more). So, plugging two (2) of those fans would only draw a total of 0.52A, which is perfectly safe.

You can use a 2-way Y fan splitter cables such as this: https://www.amazon.com/Splitter-Extension-Sleeving-Connectors-Length/dp/B00C46DX4S

Note that your Gigabyte Z170 HD3P motherboard's SYS_FAN1 and SYS_FAN2 headers are 4-pin headers but is non-PWM (supplied variable voltage at the 2nd pin). The SYS_FAN3 header is a 3-pin header that supplies constant +12V at the 2nd pin, but lacks an electronic connection at the 3rd pin (no tachometer reading). https://www.gigabyte.com/Motherboard/GA-Z170-HD3P-rev-10#support-manual

This means, plugging the SP120 fans (which are 3-pin DC fans) on SYS_FAN1 and/or SYS_FAN2 headers will allow, via variable voltage, the fan speed to be controlled (and detected) by your motherboard, while plugging it on the SYS_FAN3 header will always have the fan run 100% 24/7 with no speed control, and the speed cannot be detected by the motherboard (lacks 3rd pin sense connection).
 
Upvote 0 Downvote
Solution
G

GregoryHinojosa

Reputable
Oct 9, 2016
19
0
4,510


was going to use a splitter as raisonjohn mentioned.
 
Upvote 0 Downvote
G

GregoryHinojosa

Reputable
Oct 9, 2016
19
0
4,510


This shouldnt be a problem, i have a fan plugged into the 3 pin connection and im able to control it using gigabytes app center software. So just to make sure, i would still be able to control the fans speeds plugged into the 3pin via a splitter right? They should also be read as 1 fan?
 
Upvote 0 Downvote
raisonjohn

raisonjohn

Expert
Ambassador
Feb 22, 2015
4,102
90
39,040
Yes, using 3-pin Y splitters, you should still be able to control fan speeds as both fans, being connected to one header, should receive the same amount of voltage and thus, if using the BIOS and/or app center software, would allow the fan to speed up/slow down based on your settings on that fan header (the 2 fans connected to such header is only detected as 1 fan - so its best to use same fan model on a splitter for proper rpm readings).
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom