Siig IO1871 Driver Download (Official)

10 Ratings

Supported Models

IO1871 Driver

CyberParallel PCI Driver

CyberSerial PCI 16C550 Driver

CyberSerial PCI 16C650 Driver

CyberSerial PCI 16C654 Driver

CyberSerial PCI 16C850 Driver

SIIG Cyber 2P1S PCI Board Driver

SIIG Cyber 2P2S PCI Board Driver

SIIG Cyber 2S1P PCI Board Driver

SIIG Cyber 650 2P1S PCI Board Driver

SIIG Cyber 650 2P2S PCI Board Driver

SIIG Cyber 650 2S1P PCI Board Driver

SIIG Cyber 650 I/O PCI Board Driver

SIIG Cyber 850 2P1S PCI Board Driver

SIIG Cyber 850 2P2S PCI Board Driver



Supported Operating Systems

Windows XP

File Name

PCI20x_WinXP_v20.00g.exe (118.8 KB)

Versions (2002-08-06) via .inf
5.1.2600.0 (2002-01-18) via .inf

Find Related Drivers

Uploader Notes

Quartet Serial Plus PCI

Four 16650 serial port I/O card with 4-port (DB9) fan-out cable

Uploaded By

Andrews (DG Staff Member) on 11-Sep-2004

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
cbports.dll 40.4 KB 2 Mar 2002
cbserial.sys 53.2 KB 7 Aug 2002
CYBER20X.INF 4.8 KB 7 Apr 2003
portmon2.sys 6.8 KB 11 Nov 2003
siig20x.inf 19.2 KB 7 Apr 2003

How to Update IO1871 Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the IO1871 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 IO1871 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 Driver Update Utility for IO1871. 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 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

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. 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.

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