ST Lab USB TO SERIAL 4 PORTS Driver Download
The USB TO SERIAL 4 PORTS is a network device manufactured by ST Lab. 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 "mcs7840.exe" 896 times with an aggregate rating of 4 out of 5 stars based on 2 reviews. The uploader reports that this update will work successfully on PCs running Windows Vista and Windows XP. The total disk space used for this update is 6.3 MB.
Supported Models
USB TO SERIAL 4 PORTS
High-Speed USB MultiSerial Compound Device
High-Speed USB Serial Port
MosChip High-Speed USB MultiSerial Compound Device
MosChip High-Speed USB Serial Port
Manufacturers
Supported Operating Systems
Windows Vista, Windows Vista (64 bit), Windows 2003, Windows XP, Windows 2000
File Name
Versions
1.3.0.0 (2006-12-08) via .inf
1.2.8.0 (2006-11-21) via .inf
1.2.6.0 (2006-10-11) via .inf
Additional Notes
USB Devices II
U-400 USB 2.0 Serial 4 port Station
Driver file
Uploaded By
Karthikkumar (DG Staff Member) on 17-Apr-2009
Related Driver Updates
Driver Contents File List
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| MAC10.X/MCS7840DRV_MAC10.X.zip | 110.8 KB | 10 Aug 2006 |
| Vista32/MSSetup.exe | 270.3 KB | 7 Dec 2006 |
| Vista32/MSUninst.exe | 254.0 KB | 7 Dec 2006 |
| Vista32/winxp/MSConfig.ini | 159 bytes | 6 Nov 2006 |
| Vista32/winxp/MSUninst.exe | 254.0 KB | 7 Dec 2006 |
| Vista32/winxp/Mos24Ser.inf | 4.9 KB | 7 Dec 2006 |
| Vista32/winxp/Mos24SerPropPage.dll | 65.5 KB | 7 Dec 2006 |
| Vista32/winxp/Mos24Serial.exe | 299.0 KB | 7 Dec 2006 |
| Vista32/winxp/Ms24Comp.inf | 2.6 KB | 7 Dec 2006 |
| Vista32/winxp/MultiMP.exe | 245.8 KB | 7 Dec 2006 |
| Vista32/winxp/mos24ser.cat | 9.9 KB | 16 Oct 2006 |
| Vista32/winxp/mos24ser.sys | 239.7 KB | 8 Dec 2006 |
| Vista64/MSSetup.exe | 391.2 KB | 7 Dec 2006 |
| Vista64/MSUninst.exe | 367.6 KB | 7 Dec 2006 |
| Vista64/win64_AMD/MSConfig.ini | 159 bytes | 6 Nov 2006 |
| Vista64/win64_AMD/MSUninst.exe | 367.6 KB | 7 Dec 2006 |
| Vista64/win64_AMD/Mos24Ser.inf | 4.9 KB | 7 Dec 2006 |
| Vista64/win64_AMD/Mos24SerPropPage.dll | 64.5 KB | 7 Dec 2006 |
| Vista64/win64_AMD/Mos24Serial.exe | 410.6 KB | 7 Dec 2006 |
| Vista64/win64_AMD/Ms24Comp.inf | 2.6 KB | 7 Dec 2006 |
| Vista64/win64_AMD/MultiMP.exe | 338.9 KB | 7 Dec 2006 |
| Vista64/win64_AMD/mos24ser.cat | 10.0 KB | 16 Oct 2006 |
| Vista64/win64_AMD/mos24ser.sys | 237.3 KB | 8 Dec 2006 |
| WHQL/WHQL32/MSSetup.exe | 274.4 KB | 11 Oct 2006 |
| WHQL/WHQL32/MSUninst.exe | 258.0 KB | 11 Oct 2006 |
| WHQL/WHQL32/winxp/MSUninst.exe | 258.0 KB | 11 Oct 2006 |
| WHQL/WHQL32/winxp/Mos24Ser.inf | 4.9 KB | 11 Oct 2006 |
| WHQL/WHQL32/winxp/Mos24SerPropPage.dll | 61.4 KB | 11 Oct 2006 |
| WHQL/WHQL32/winxp/Mos24Serial.exe | 299.0 KB | 11 Oct 2006 |
| WHQL/WHQL32/winxp/Ms24Comp.inf | 2.6 KB | 11 Oct 2006 |
| WHQL/WHQL32/winxp/mos24ser.cat | 9.9 KB | 16 Oct 2006 |
| WHQL/WHQL32/winxp/mos24ser.sys | 546.6 KB | 11 Oct 2006 |
| WHQL/WHQL64/MSSetup.exe | 385.5 KB | 11 Oct 2006 |
| WHQL/WHQL64/MSUninst.exe | 362.0 KB | 11 Oct 2006 |
| WHQL/WHQL64/win64_AMD/MSUninst.exe | 362.0 KB | 11 Oct 2006 |
| WHQL/WHQL64/win64_AMD/Mos24Ser.inf | 4.9 KB | 11 Oct 2006 |
| WHQL/WHQL64/win64_AMD/Mos24SerPropPage.dll | 63.0 KB | 11 Oct 2006 |
| WHQL/WHQL64/win64_AMD/Mos24Serial.exe | 407.0 KB | 11 Oct 2006 |
| WHQL/WHQL64/win64_AMD/Ms24Comp.inf | 2.6 KB | 11 Oct 2006 |
| WHQL/WHQL64/win64_AMD/mos24ser.cat | 10.0 KB | 16 Oct 2006 |
| WHQL/WHQL64/win64_AMD/mos24ser.sys | 335.5 KB | 11 Oct 2006 |
| Win32/MSSetup.exe | 278.5 KB | 20 Oct 2006 |
| Win32/MSUninst.exe | 258.0 KB | 20 Oct 2006 |
| Win32/Win98&me/DbgMsg9X.sys | 18.5 KB | 17 Sep 2004 |
| Win32/Win98&me/MONITOR.EXE | 307.2 KB | 17 Sep 2004 |
| Win32/Win98&me/MOS24SPT.vxd | 8.8 KB | 21 Nov 2006 |
| Win32/Win98&me/MS24ENUM.vxd | 140.5 KB | 20 Oct 2006 |
| Win32/Win98&me/MSConfig.ini | 159 bytes | 4 Mar 2003 |
| Win32/Win98&me/MSInputs.ini | 31 bytes | 17 Sep 2004 |
| Win32/Win98&me/MSVCP60.DLL | 401.5 KB | 17 Sep 2004 |
| Win32/Win98&me/MULSER.DLL | 7.5 KB | 20 Oct 2006 |
| Win32/Win98&me/Mos24SPt.inf | 2.9 KB | 21 Nov 2006 |
| Win32/Win98&me/Mos24Sr.sys | 133.3 KB | 21 Nov 2006 |
| Win32/Win98&me/MulSer.EXE | 282.6 KB | 21 Nov 2006 |
| Win32/Win98&me/MultiMP.exe | 254.0 KB | 20 Oct 2006 |
| Win32/Win98&me/dbgmsgcfg.dll | 28.7 KB | 17 Sep 2004 |
| Win32/Win98&me/mos24sr.inf | 3.7 KB | 21 Nov 2006 |
| Win32/winxp/DbgMsg.sys | 18.2 KB | 12 Dec 2003 |
| Win32/winxp/MSConfig.ini | 159 bytes | 17 Jul 2006 |
| Win32/winxp/Mos24Ser.inf | 4.5 KB | 21 Nov 2006 |
| Win32/winxp/Mos24SerPropPage.dll | 61.4 KB | 21 Nov 2006 |
| Win32/winxp/Mos24Serial.exe | 303.1 KB | 21 Nov 2006 |
| Win32/winxp/Ms24Comp.inf | 3.0 KB | 21 Nov 2006 |
| Win32/winxp/MultiMP.exe | 245.8 KB | 25 Sep 2006 |
| Win32/winxp/dbgmsgcfg.dll | 28.7 KB | 12 Dec 2003 |
| Win32/winxp/monitor.exe | 307.2 KB | 12 Dec 2003 |
| Win32/winxp/mos24ser.sys | 553.2 KB | 21 Nov 2006 |
| Win32/winxp/msvcp60.dll | 401.5 KB | 12 Dec 2003 |
| Win64/MSSetup.exe | 387.1 KB | 20 Oct 2006 |
| Win64/MSUninst.exe | 363.5 KB | 20 Oct 2006 |
| Win64/win64_AMD/DbgMsg.sys | 18.2 KB | 12 Dec 2003 |
| Win64/win64_AMD/MSConfig.ini | 159 bytes | 17 Jul 2006 |
| Win64/win64_AMD/Mos24Ser.inf | 4.5 KB | 21 Nov 2006 |
| Win64/win64_AMD/Mos24SerPropPage.dll | 63.5 KB | 21 Nov 2006 |
| Win64/win64_AMD/Mos24Serial.exe | 410.6 KB | 21 Nov 2006 |
| Win64/win64_AMD/Ms24Comp.inf | 3.0 KB | 21 Nov 2006 |
| Win64/win64_AMD/MultiMP.exe | 338.9 KB | 25 Sep 2006 |
| Win64/win64_AMD/dbgmsgcfg.dll | 28.7 KB | 12 Dec 2003 |
| Win64/win64_AMD/monitor.exe | 307.2 KB | 12 Dec 2003 |
| Win64/win64_AMD/mos24ser.sys | 335.5 KB | 21 Nov 2006 |
| Win64/win64_AMD/msvcp60.dll | 941.6 KB | 25 Mar 2005 |
| WinCE/MCS7840_WinCE/Release1.0.1.0/MCS7840Cab/SpecCe50.CAB | 24.6 KB | 1 Nov 2006 |
| WinCE/MCS7840_WinCE/Release1.0.1.0/MCS7840Cab/SpecCe50.CAB/SpecCe50.000 | 403 bytes | 1 Nov 2006 |
| WinCE/MCS7840_WinCE/Release1.0.1.0/MCS7840Cab/SpecCe50.CAB/SpecCe50.001 | 24.1 KB | 31 Oct 2006 |
| WinCE/MCS7840_WinCE/Release1.0.1.0/Readme.txt | 329 bytes | 1 Dec 2006 |
| WinCE/MCS7840_WinCE/Release1.0.1.0/drvdsk/SpecCe50.dll | 24.1 KB | 31 Oct 2006 |
| WinCE/MCS7840_WinCE/Release1.0.1.0/drvdsk/SpecCe50.inf | 738 bytes | 1 Nov 2006 |
| WinCE/MCS7840_WinCE/WinCE5_INS_X86.pdf | 36.6 KB | 1 Dec 2006 |
| WinCE/Release1.0.1.0/MCS7840Cab/SpecCe50.CAB | 24.6 KB | 1 Nov 2006 |
| WinCE/Release1.0.1.0/MCS7840Cab/SpecCe50.CAB/SpecCe50.000 | 403 bytes | 1 Nov 2006 |
| WinCE/Release1.0.1.0/MCS7840Cab/SpecCe50.CAB/SpecCe50.001 | 24.1 KB | 31 Oct 2006 |
| WinCE/Release1.0.1.0/Readme.txt | 329 bytes | 1 Dec 2006 |
| WinCE/Release1.0.1.0/drvdsk/SpecCe50.dll | 24.1 KB | 31 Oct 2006 |
| WinCE/Release1.0.1.0/drvdsk/SpecCe50.inf | 738 bytes | 1 Nov 2006 |
| WinCE/WinCE5_INS_X86.pdf | 36.6 KB | 1 Dec 2006 |
How to Update USB TO SERIAL 4 PORTS Device Drivers Quickly & Easily
Step 1 - Download Your Driver
To get the USB TO SERIAL 4 PORTS 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 ST Lab USB TO SERIAL 4 PORTS 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 ST Lab Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.
Step 2 - Install Your Driver
Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.
How to Open Device Manager
In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager
In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager
In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager
In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager
In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button
How to Install a driver from Device Manager
Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.
Select the Driver tab.
Click the Update Driver button and follow the instructions.
In most cases, you will need to reboot your computer in order for the driver update to take effect.
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.