Answer:
clone
Step-by-step explanation:
Many manufacturers always ensure their products are accompanied by a user manual and and a driver in a CD or can be obtained from their website to guide users on how to operate the device.
If the device has neither, it means it has been refurbished or its an imitation of the original make.
Cloned devices can easily malfunction and trouble shooting them tends to be a matter of guess work. Compared to the real device, their prices are normally cheap compared to the real devices.