The same device can be opened more than once by different applications, that can be useful in many cases.

Unlike regular serial ports, virtual devices have special capabilities: for example, It is able to create various virtual devices to transmit/receive data. VSPE is intended to help software engineers and developers to create/debug/test applications that use serial ports. If for some reason you prefer not to install Service Pack 1, you can download old VSPE version below which works on unpatched Windows 7 verison: VSPE_0.937.4.747 Description Additional updates: how-to-obtain-and-install-windows-7-sp2.VSPE requires Windows 7 圆4 to have Service Pack 1 + all security updates to be installed. In this case you can try to using older release which is compatible to those systems: If you are using Windows operating system which is not officially supported by Microsoft (Windows XP, Vista etc), you can hit issues with loading VSPE kernel driver. To avoid any problems with kernel driver signature verifications (manifesting as error 241 due to missing root certificate), please ensure that legacy Windows system has all the latest updates installed. We test our releases against different operating systems: including combinations of 32/64 bit architecture and SecureBoot mode for 64 bit operating systems.In some cases (for Windows XP for example) you will have to use previous VSPE version - see 'SUPPORT OF LEGACY OPERATING SYSTEMS' section below. Legacy operating systems require latest Windows updates/service packs to be installed: applicable to Windows XP, Windows Vista, Windows 7 and Windows 8.Windows 10 or Windows Server 2019 (but can work on earlier versions as well).x86 (32 bit) or x86_64 (64 bit) platform Windows.Windows 7 Home Premium 圆4 Service Pack 1, all updates.Windows 7 Ultimate 圆4 Service Pack 1, all updates.The latest VSPE has been successfully tested on the following systems Always test before buying! Because of the way VSPE emulation works, please ALWAYS test VSPE (without activating it) on your target operating system before purchasing it - to see if it suits your needs

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