如果这是Windows操作系统，那么尝试将COM端口名指定为\.\COM 11
我该怎么办呢？电脑显示找了新硬件，utstarcom dc200 modem 但我装不 了驱动。
是不是根本就没有COM2 这个硬件接口。看看你自己电脑有哪个端口就开启哪个
'String was not recognized as a valid DateTime.' 'System.Array' does not contain a definition for 'Select' and no extension method 'Select' 'System.Windows.Forms.Button' does not contain a definition 'System.Xml.XmlException' occurred in System.Xml.dll Visual C#? 'Transaction failed. The ...
公开他们的应用程序和设备之间进行通信的 COM 端口的 USB 设备使用收件箱 Usbser.sys Windows 8.1、 Windows Server 2012 R2,Windows 7 或 Windows Server 2008 R2 中创建虚拟 COM 端口。如果此类设备中移除,然后重新快速插入它可能未被重新发现正确,以及 COM 端口,如 COM3,可能无法...
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ERROR_HV_INVALID_PORT_ID 0xC0350011 虚拟机监控程序无法执行操作,因为指定的端口标识符无效。 ERROR_HV_INVALID_CONNECTION_ID 0xC0350012 虚拟机监控程序无法执行该操作,因为指定的连接标识符无效。 ERROR_HV_INSUFFICIENT_BUFFERS 0xC0350013 没有提供足够的缓冲区来发送消息。 ERROR_HV_NOT_ACKNOWLEDGED 0xC0...
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kernel debugging of a virtual machine. The virtual machine can be located on the same physical computer as the debugger or on a different computer that is connected to the same network. This topic describes how to set up debugging of a virtual machine manually using a virtual COM ...
Windows Server 2012 R2, Windows 7, or Windows Server 2008 R2. If such a device is removed and then reinserted quickly, it may not be rediscovered correctly, and the COM port, such as COM3, may not be re-created. Additionally, you may receive an ...