Ancable Replacement Audio Cable for 5.1 Channel Logitech Computer Speakers 3.5mm 1/8 TRS Plug Male to Male 6ft,Compatible with logitech z-5500, z-5450, z-5400, z-5300, z-906, z-680, x540 etc. : Electronics - Amazon.com
Logitech X 530 surround sound speaker system for computer or gaming rig for Sale in Portland, OR - OfferUp
Question - Connecting turntable to speakers | Tom's Hardware Forum
Logitech X-530 specifications
Audio Line For Logitech X540 5500 For Chuangxin Speakers 3 Color Cables Coded 3 Minijack Audio Cable Control Pod 3.5mm - Pc Hardware Cables & Adapters - AliExpress