Aspire V3-572P-36H1 sound,trackpad disconnected -which cable to fix?

I recently replaced the HDD on my ACER V3-572P-36H1 with an SSD from Crucial and it is working fine, but in the process I inadvertently disconnected the sound and touchpad and lighted keys. Does anybody know what cable I loosened and where the connections are? Any pictures of the inside of this PC or something similar? I think this will be an easy fix, but don’t want to reopen the case until I know exactly what I am doing to reconnect sound, touchpad and lighted keys. Thanks very much

Ray