MosChip MCS7820 Driver Download (Official)

MosChip Drivers

The MCS7820 is a network device manufactured by MosChip. Issues like weak Wi-Fi signal, slow DNS lookup, duplicate IP addresses, slow network and excessive CPU usage can be solved by updating this driver. Visitors have downloaded this file "" 21 times with an aggregate rating of 5 out of 5 stars based on 2 reviews. It is compatible with PCs running Windows XP, among other operating systems. The total disk space used for this update is 1.9 MB.

MosChip MCS7820 Automatic Driver Update Utility
2 Ratings

Supported Models


High-Speed USB MultiSerial Compound Device

High-Speed USB Serial Port



Supported Operating Systems

Windows XP, Windows 2000, Windows ME, Windows 98

File Name

Versions (31-May-2008) (2008-05-30) via .inf (2007-09-03) via .inf

Additional Notes

The MCS7820 is a USB 2.0 to Dual-Serial Port device. It has been developed to connect a wide range of standard serial devices to a USB host. The MCS7820 has a USB device controller connected to two (2) individual UARTs.

Uploaded By

Sathishkumar (DG Staff Member) on 14-Aug-2009

How to Update MCS7820 Device Drivers

Step 1 - Download Your Driver

To get the MCS7820 driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter MosChip MCS7820 into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the MosChip Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the MosChip website. Most major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

After downloading your new driver, it's time to install it. For Windows users, the built-in Device Manager is your go-to tool for managing system devices and drivers. Here's how to use it:

  1. Right-click the Start button to open the Quick Access menu.

  2. Select "Device Manager" from the list of options.

  3. In the Device Manager window, locate the device that needs updating.

  4. Right-click on the device name and choose "Update driver" from the context menu.

  5. Follow the on-screen instructions to complete the installation process.

Once the installation is complete, restart your computer to ensure the new driver is properly integrated and functional.

This simple process helps keep your system running smoothly and maintains compatibility with your hardware components.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
Diagnostic Utility_UM.pdf 201.8 KB 5 Oct 2006
Driver_User manual_98ME.pdf 144.3 KB 5 Oct 2006
Driver_User manual_XP.pdf 333.6 KB 5 Oct 2006
Version1.4.1.0/Win32/9710_7840_QUADPORT_MSUninst.exe 258.0 KB 3 Jun 2008
Version1.4.1.0/Win32/MSSetup_QUADPORT.exe 286.7 KB 3 Jun 2008
Version1.4.1.0/Win32/Win98&me/DbgMsg9X.sys 18.5 KB 17 Sep 2004
Version1.4.1.0/Win32/Win98&me/MONITOR.EXE 307.2 KB 17 Sep 2004
Version1.4.1.0/Win32/Win98&me/MOS24SPT.vxd 8.8 KB 20 Oct 2006
Version1.4.1.0/Win32/Win98&me/MS24ENUM.vxd 140.5 KB 20 Oct 2006
Version1.4.1.0/Win32/Win98&me/MSConfig.ini 159 bytes 4 Mar 2003
Version1.4.1.0/Win32/Win98&me/MSInputs.ini 31 bytes 17 Sep 2004
Version1.4.1.0/Win32/Win98&me/MSVCP60.DLL 401.5 KB 17 Sep 2004
Version1.4.1.0/Win32/Win98&me/MULSER.DLL 7.5 KB 20 Oct 2006
Version1.4.1.0/Win32/Win98&me/Mos24SPt.inf 2.9 KB 3 Sep 2007
Version1.4.1.0/Win32/Win98&me/Mos24Sr.sys 133.7 KB 3 Sep 2007
Version1.4.1.0/Win32/Win98&me/MulSer.EXE 290.8 KB 20 Oct 2006
Version1.4.1.0/Win32/Win98&me/MultiMP.exe 254.0 KB 20 Oct 2006
Version1.4.1.0/Win32/Win98&me/dbgmsgcfg.dll 28.7 KB 17 Sep 2004
Version1.4.1.0/Win32/Win98&me/mos24sr.inf 3.7 KB 3 Sep 2007
Version1.4.1.0/Win32/win32/MSConfig_QUADPORT.ini 159 bytes 6 Nov 2006
Version1.4.1.0/Win32/win32/Mos24SerPropPage_QUADPORT.dll 65.5 KB 31 May 2008
Version1.4.1.0/Win32/win32/Mos24Ser_QUADPORT.inf 4.9 KB 31 May 2008
Version1.4.1.0/Win32/win32/Mos24Serial_QUADPORT.exe 303.1 KB 31 May 2008
Version1.4.1.0/Win32/win32/Ms24Comp_QUADPORT.inf 3.3 KB 31 May 2008
Version1.4.1.0/Win32/win32/MultiMP_QUADPORT.exe 249.9 KB 31 May 2008
Version1.4.1.0/Win32/win32/QuadCoInst.dll 9.2 KB 31 May 2008
Version1.4.1.0/Win32/win32/mos24ser_QUADPORT.sys 615.0 KB 31 May 2008
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