The power light will remain on and constant while in sleep mode. Using ATI Graphics Cards[ edit ] The control software from nVidia will not install if no other nVidia products such as a graphics card, chipset or drive controller are present in the PC. The software can be installed if the motherboard uses an nVidia chipset, or if an nVidia graphics card is used as the primary display adapter. The PSU also has a detachable wiring harness allowing for[…]