This is a set of tested and working components removed from a ProLite X3291HS monitor, including the mainboard, power switch wiring, and internal speaker wiring. The parts were removed because the screen was damaged during use. Both audio and power functions are working without issue. Ideal for repairs or parts replacement. Please check the condition in the images. #ProLiteX3291HS #Mainboard #SpeakerWiring #PowerSwitch #LCDMonitorParts #RepairParts #ElectronicsRepair #UsedParts #Iiyama #PCMonitor ProLite X3291HS model LCD TV, with mainboard information. - Model Name: ProLite X3291HS - Mainboard Information: FPCB3703010100 - Mainboard Information: 75675299-P0-001-OVS Thank you for viewing.