Asmedia Asm1083 Serial Port Driver Windows 10 «PROVEN | Overview»

If the above fails:

Some older software (especially industrial automation or legacy GIS software) only looks for COM ports numbered 1 through 4. If Windows assigns the card COM5 or higher, the software won't see it.

You will see "Windows cannot verify the digital signature of this driver" on 64-bit Windows 10.

Permanent Fix (Not recommended for security): asmedia asm1083 serial port driver windows 10

Better Fix (Use test mode permanently): Run Command Prompt as Admin:

bcdedit /set testsigning on

Reboot. You will see "Test Mode" in the corner – now install the driver. After success, run bcdedit /set testsigning off and reboot.

ASMedia’s ASM1083 is a PCI Express-to-serial bridge used on some desktop motherboards, industrial motherboards, and adapter cards to provide legacy RS‑232 serial ports. If you’re running Windows 10 and need the ASM1083 serial port to work reliably (for old instruments, serial consoles, POS systems, or embedded hardware), this post walks through what the device is, common driver issues, step‑by‑step installation, troubleshooting, and tips for stable operation. If the above fails: Some older software (especially

If the above fails, you can try manually assigning the Windows inbox serial.sys driver:

If Windows 10 drivers fail entirely, you can attempt to force-install the Windows 7 driver.

Steps for compatibility mode:

Or install via Device Manager as shown earlier. The Windows 7 driver (version 1.16.0.0) works on Windows 10 up to version 21H2 but may break on newer builds.

Before downloading any driver, you must correctly identify the hardware IDs.