RCA to 3.5mm cable for pc

TheITN3RD

Beginner
I have a philips 2.1 analog speaker with subwoofer, i want to connect it to my pc, will a 3.5mm Jack Stereo Audio Male to 2 RCA Male Cable is sufficient or do i need to buy a Digital to Analog Audio Converter DAC.
Update: i purchased a 3.5mm to RCA cable , hooked red & white pins to my speaker and Aux to Green colored audio jack....nothing but static . Do i need to get DAC to make it work ??
I have a philips 2.1 analog speaker with subwoofer, i want to connect it to my pc, will a 3.5mm Jack Stereo Audio Male to 2 RCA Male Cable is sufficient or do i need to buy a Digital to Analog Audio Converter DAC.
Update: i purchased a 3.5mm to RCA cable , hooked red & white pins to my speaker and Aux to Green colored audio jack....nothing but static . Do i need to get DAC to make it work ??
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