Question 3 speakers have no audio ports (?)

[FilmCraft]

I have these 3 speakers, how am I supposed to connect them to my pc with only what I believe are power ports?
No idea what model these are.

 

[boju]

Just your typical speakers using speaker wire. An Avr that connects to your pc via 3.5mm to rca, or use Hdmi audio from your graphics card if that's another option for you. There are many avrs out there at all different prices, below is just an example.

https://www.amazon.com/Sony-STRDH590-multi-channel-Receiver-Bluetooth/dp/B078WG7HZY/ref=mp_s_a_1_3?

 

[doolittle]

Agree that would be a good choice if you want to build up a 5.1 system and just need a sub and a pair of rear channel speakers - a budget alternative, a small stereo amp for the 2 L/R speakers like this Fosi Audio BT10A might be more desktop-friendly choice since you only need the 2 smaller speakers. The bluetooth connectivity is convenient when your PC is off and want to play audio from your phone or tablet

The center channel can be used standalone, consider a mono amp like this PEMENOL TWS kit amp, and a power supply would make a decent kitchen audio player, also bluetooth to play from your phone or tablet