A): The use of other cables with ADR cables is not recommended because there is a greater voltage drop on them and there may be communication failures. 

B): Only when it is absolutely necessary (such as when connecting a printer), where there is another type of USB-B connector and in the shortest possible length - the use of a transient reduction is ideal.

A): Drivers are included with operating systems (except for WIN98SE/ME), and are installed completely automatically. The user only installs drivers for the connected printer, if necessary. Try to find them using Windows Update or check with your printer manufacturer. For more information, see the user guide on the product page.

B): No other drivers need to be installed and are not even available. If you continue to have problems with your adapter, check out more tips that can help you troubleshoot problems.

A): If a device without own power supply and higher current consumption is connected to an active power cord , the device may not work or works unreliably. If you want to use a self-powered device such as a printer at the end of the cable, no auxiliary power is needed.

B): The auxiliary power supply should be used at a higher demand than 100 mA, or when several cables are connected in series (behind each other). For details, refer to the User Manual (downloadable on the product page).

A): If the adapter is not displayed in "Device Manager" (in USB Bus Controllers - USB Print Support), there may be a USB port malfunction.

B): Try plugging the adapter into another USB port. The adapter should be detected and the drivers loaded automatically. If the problem persists, plug the adapter into the USB port of another computer to verify its functionality.

A): If this happens, it means that the operating system failed to get the necessary information to install the drivers.

B): The cause may be a defective USB cable or damaged device. If the problem persists, plug the adapter into the USB port of another computer to verify its functionality.

A): Converters from USB to LPT ADP-xx do not create an LPT port. After installation, it creates USB print support in Device Manager for printers equipped with LPT port, but does not replace (or create) a fully fledged parallel port.

B): You can buy one of the PCEA-xx cards to create a fully fledged parallel port.

A): Please make sure that the port - USB001 - Virtual printer port for USB is correctly set in printer properties.

B): If "USB Print Support" is displayed twice in the Device Manager, it is possible that the printer is mapped to the second Virtual Port USB002 - try changing the port setting to USB002 (or another available in the printer port settings).

A): After installing the drivers the adapter will log in Device Manager in the section Ports (COM and LPT) as USB to serial Comm Port, so it can.

B): However, it still depends on the SW device, some very old programs need a specific interrupt (IRQ) that does not work correctly with the USB / COM converter.

A): You will need a female-female reduction because the ADS-xx has a male end.

B): Be careful that this reduction is not cross-linked (so called Null Modem), so you need a standard non-cross-linked reduction to connect.

A): Yes, using multiple ADS-xx units on one PC (NTB) is possible.

B): Each adapter gets its own COM port number assigned by the system, which can be changed in the settings as needed by the user.