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Features of the Active USB-COM Port Driver
1. Features:
- The USB device can be removed from the PC USB Port while the application opens the Serial Port with which the USB device is connected. (It will be kept opening when the USB device is plugged into the USB Port again.)
- The communication unit (CU-221/CU-421) can be removed from the PC USB Port while connecting with PC by both serial IrDA protocol driver and Microsoft Active Sync. (It will be able to be re-connected when the CU is plugged into the USB Port again.)
- The Virtual Serial Port is always existed on PC even if USB device is removed from the PC USB Port, so that the Serial Port can be opened anytime.
- On the task tray or the Device Manager, the COM port is confirmed which port the USB device is connected with.
2. Differences:
The below table shows the functional differences between the Active USB-COM and USB-COM 1.x.
| Function | Active USB-COM | USB-COM Ver.1.x |
|---|---|---|
| Need for the operation of "safely remove the USB device" when the USB device is removed | No need | Need |
| Serial Port Number release when the USB device is removed | Non-release | Release |
| Plugging
the USB device into/off, during communication (COM Port is opened) |
Possible | Impossible |
| Plugging the USB device into/off, while using Serial IrDA Protocol Driver | Possible | Impossible |
| Supported Windows® Version | 2000, XP(32bit), Vista(32bit) | 98SE, Me, 2000, XP(32bit) |
3. Notice:
- Please install the Active USB-COM Port Driver as the Administrator.
- The Active USB-COM Port Driver does not have the digital sign of Microsoft Corporation. Please do not block at "Driver Signing Options" and the security options of local policies in the local security settings of your PC, and the installation of the Active USB-COM Port Driver will become successful.
- The USB device can be removed and plugged into PC during communication (COM port is opened). However, communication data are lost while the USB device is removed.
- COM Port Number is always occupied because this driver is operated as a Virtual Serial Port, even while the USB device is removed.
- The Active USB-COM Port Driver and the USB-COM Port Driver 1.x can not be used at the same time. The installer of this driver requires to uninstall the USB-COM Port Driver 1.x.
- The multiple use of the USB device is available when the Active USB-COM Port driver is installed at the multiple times. However, this driver can not be individually uninstalled, so that all the installed drivers must be uninstalled at one time.
- The Active USB-COM Port Driver can not install as a specified COM Port Number. Installed USB Device is assigned to the lowest unused COM Port Number (COM3 or later) which is managed by Windows. Please confirm the pair relation between USB Device and COM Port Number after installing this driver each time.
- In case of Windows Vista, please read "Microsoft ActiveSync" as "Microsoft Windows Mobile Device Center".
- The release of the Active USB-COM Port Driver does not mean that the current USB-COM Port Drive 1.x should be replaced with the Active USB-COM Port Driver. It is suggested that the functional differences should be well-understood and considered which driver is appropriate for your purpose.
