Connecting multiple speakers to one output -

Many sound cards have a PC Speaker header that lets you route the motherboard PC speaker

Yes you can, just remember that the stock system will attenuate your rear speakers around volume level 22 So anything around that level, the

can i use a pcie 40 nvme in a 30 slot Yes you can, just remember that the stock system will attenuate your rear speakers around volume level 22 So anything around that level, the

can i put a pcie 40 in a 30 slot Yep, for sure I was just mentioning that because trying to shove two 12g wires into a single speaker terminal could be a pain using bare wires