Asmedia — Asm1083 Serial Port Driver Windows 10

The ASMedia ASM1083 is primarily a PCI Express to PCI forward bridge. If you see a "PCI Serial Port" error in Windows 10 while using this hardware, it usually means a device plugged into the PCI slot—such as a legacy serial card—is missing its specific driver. 1. Understanding the ASM1083

Steps to Identify:

Press Win + X and select Device Manager.
Locate the problematic device (e.g., "PCI Serial Port" or "Unknown Device").
Right-click it → Properties → Details tab.
From the Property dropdown, select Hardware Ids.

ASMedia ASM1083 is not a serial port controller; it is a PCIe-to-PCI bridge asmedia asm1083 serial port driver windows 10

Open Device Manager.
Right-click the unknown device (often labeled ASM1083 or PCI Device under "Other devices").
Select Update driver.
Choose Search automatically for drivers.
If a driver is found, Windows will install it.

Try the MosChip MCS9900 Windows 10 driver first (works for many generic ASM1083 serial cards).
If that fails, check the card’s PCB for a small chip labeled “OX16PCIe952” or “MCS9922” and search for that specific driver.
When all else fails, invest $15–20 in a new PCIe serial card or USB adapter.

Solution: Download the driver for that specific serial controller chip, not for the ASM1083.

Q: Will this work on Windows 11? A: Possibly, but Windows 11 has stricter driver requirements. Many users report the ASM1083 fails to install on Windows 11 entirely. Stick to Windows 10 for legacy hardware. The ASMedia ASM1083 is primarily a PCI Express

The ASMedia ASM1083 is a unique PCIe to PCI bridge chip. It allows older PCI (Peripheral Component Interconnect) cards—such as legacy serial ports, industrial I/O cards, or older sound cards—to function in modern motherboards that only feature PCI Express (PCIe) slots. However, Windows 10 does not always natively recognize this bridge, leading to "Code 28" errors, yellow exclamation marks in Device Manager, or complete non-functionality of your serial devices. Press Win + X and select Device Manager

Search for: "ASUS ASM1083 driver" or use drivers from the ASUS P8Z77-V or M5A99FX Pro R2.0 support page. The filename is typically ASMedia_PCIe_PCI_Controller_Driver_V10114_V2_XPWin7.zip or similar.