SIIG JU-SC0111-S1 Drivers Windows 11, 10

SIIG’s 4-Port USB to RS-232 Serial Adapter Hub adds four 9-pin serial ports through USB, supporting data rates up to 230 Kb/s with plug-and-play connectivity and bus-powered operation.

Quick Install Steps

1. Download and extract – Download  MCS7840_7820_7810_Windows_64bit_Driver...zip and extract the ZIP file.
2. Open the extracted folder – Locate the driver installation file MSSetup_QUADPORT.exe or browse to the .inf for manual installation.
3. Run the installer – Double-click the setup file and follow the on-screen instructions to install the MCS7840CV driver.
4. Restart and connect – Restart your computer if prompted, then connect the USB serial adapter and verify it appears correctly in Windows Device Manager.