Hi, You can try to use ipmitool to change the setting, ipmitool raw 0x30 0xce 0x00 0x16 0x05 0x00 0x00 0x00 0x05 0x00 0x01 0x00 0x00 
I have a T130 server (1 week old) and since adding a Broadcom 5722 (single port NIC) the cooling fan has speeded up significantly (and very noisily). Running OpenSUSE 42.1 and functionally all is perfect. I cannot get anyone from DELL to reply to my query that if I lash out and buy a "supported" NIC (which it seems will have to be a minimum of a DP which is a waste as I only want one additional port) will the "supported" cards result in a similar noisy machine ? The Broadcom 5722 is rated at 1.41 Watts. The "supported" Broadcom cards (5719 or 5720) have power ratings of 1.21 -> 2.06 Watts (5720) and 2.41 -> 4.12 (5719) so, if the "supported" cards don't cause a fan speed increase then I see no justification for this happening with the 5722 card. I understand there is some way to defeat/modify this fan speed algorithm but I do not understand how to do this on a Linux based machine - there is a gap in my knowledge. As far as I can tell the BIOS is the latest available. Any ideas ?
T130 Fan Speed Algorithm