MosChip MCS9901 Driver Download (Official)
The MCS9901 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 "MCS9901_Vista.zip" 145 times with an aggregate rating of 5 out of 5 stars based on 4 reviews. The uploader reports that this update will work successfully on PCs running Windows Vista. The total disk space used for this update is 1.2 MB.
Supported Models
MCS9901
High-Speed PCIe Serial Port
PCI-Express Multi-IO Controller
PCIe ECP Parallel Port
PCIe-IO Bridge
PCIe-ISA Communication Port
PCIe-ISA Parallel Port
Manufacturers
Supported Operating Systems
Windows Vista, Windows Vista (64 bit)
File Name
MCS9901_Vista.zip (1.2 MB)
Versions
1.0.0.4 (29-Jan-2008)
1.0.0.4 (2008-01-28) via .inf
Additional Notes
MCS9901 is a single lane PCI Express (PCIe) based Peripheral Controller. It is a single chip solution for PCIe based Serial, Parallel Port expansion add-in cards. MCS9901 supports four high performance Serial Ports, one IEEE 1284 compliant parallel port, one USB 2.0 host controller and ISA style interface.
Uploaded By
Sathishkumar (DG Staff Member) on 14-Aug-2009
Related Driver Updates
How to Update MCS9901 Device Drivers
Step 1 - Download Your Driver
To get the MCS9901 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 MCS9901 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, installation is the next step. On Windows, utilize the built-in Device Manager utility to manage this process. This tool provides a comprehensive view of all system-recognized devices and their associated drivers. To complete the installation, a system restart is typically required 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.
Driver Contents File List
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| MCS9901_Vista/AMD64/ISASerial.sys | 73.2 KB | 29 Jan 2008 |
| MCS9901_Vista/AMD64/MOSCHIP_PCIeUninst.exe | 49.2 KB | 29 Jan 2008 |
| MCS9901_Vista/AMD64/PCIeCoInst.dll | 13.3 KB | 29 Jan 2008 |
| MCS9901_Vista/AMD64/PCIePorts.dll | 77.3 KB | 29 Jan 2008 |
| MCS9901_Vista/AMD64/PPorts.sys | 96.8 KB | 29 Jan 2008 |
| MCS9901_Vista/AMD64/SPorts.sys | 124.4 KB | 29 Jan 2008 |
| MCS9901_Vista/MCS9901_Vista_UM_Ver0.3.pdf | 851.2 KB | 19 Feb 2008 |
| MCS9901_Vista/PCIeMF.inf | 11.3 KB | 29 Jan 2008 |
| MCS9901_Vista/PCIeNull.inf | 1.9 KB | 29 Jan 2008 |
| MCS9901_Vista/PCIePorts.inf | 17.1 KB | 29 Jan 2008 |
| MCS9901_Vista/PCIeSetup.exe | 266.2 KB | 29 Jan 2008 |
| MCS9901_Vista/X86/ISASerial.sys | 66.6 KB | 29 Jan 2008 |
| MCS9901_Vista/X86/MOSCHIP_PCIeUninst.exe | 49.2 KB | 29 Jan 2008 |
| MCS9901_Vista/X86/PCIeCoInst.dll | 11.3 KB | 29 Jan 2008 |
| MCS9901_Vista/X86/PCIePorts.dll | 63.5 KB | 29 Jan 2008 |
| MCS9901_Vista/X86/PPorts.sys | 82.9 KB | 29 Jan 2008 |
| MCS9901_Vista/X86/SPorts.sys | 114.2 KB | 29 Jan 2008 |