Download and install Unknown Enhanced Serial Multi-1/PCI driver

Enhanced Serial Multi-1/PCI is a Multi Port Serial hardware device. This Windows driver was developed by Unknown. The hardware id of this driver is PCI/VEN_14a1&DEV_4d01&REV_80.

1. Install Unknown Enhanced Serial Multi-1/PCI driver manually

1. Download the driver setup file for Unknown Enhanced Serial Multi-1/PCI driver from the link below. This download link is for the driver version 1.702.01.002 released on 2012-10-22.
2.  
3. Run the driver setup file from a Windows account with the highest privileges (rights). If your UAC (User Access Control) is enabled then you will have to accept of the driver and run the setup with administrative rights.
4.  
5. Go through the driver setup wizard, which should be quite easy to follow. The driver setup wizard will scan your PC for compatible devices and will install the driver.
6.  
7. Shutdown and restart your computer and enjoy the new driver, it is as simple as that.
8.  

There is no digital signature available for this driver.

Driver rating 3.2 stars out of 10012 votes.

2. The easy way: using DriverMax to install Unknown Enhanced Serial Multi-1/PCI driver

The advantage of using DriverMax is that it will setup the driver for you in just a few seconds and it will keep each driver up to date. How can you install a driver using DriverMax? Let's follow a few steps!

1. Start DriverMax and click on the yellow button that says ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to scan and analyze each driver on your PC.
2.  
3. Take a look at the list of driver updates. Scroll the list down until you find the Unknown Enhanced Serial Multi-1/PCI driver. Click the Update button.
4.  
5. That's all, the driver is now installed!
6.