Device Manager when installing Win7: PCI serial port PCI simple communication controller exclamation mark, how to solve it? (The same two driver update methods) First, right click on the update driver Then, choose to browse the computer to find the driver software; This place needs attention, no need to choose the path, just click below to select from the computer's device driver list Find the system device and click Next. Click Next; Finally, click Yes to close, the system will automatically find the driver you need. filter,cylinder,solenoid valve Wuxi Trenty Machinery & Equipment Co., Ltd. , https://www.elec-inverter.com
