Printer pooling is the process of connecting several printers of the same model to a computer. In an office setting, this allows the printer that is not busy to complete the printing, instead of having to wait for one printer to complete a job.
If one printer in the pool goes offline, the remaining documents forward to the next available printer. Microsoft began including the option for printer pooling with Windows NT. This process requires configuring the first printer using the standard printer installation program and then enabling the feature and selecting ports for subsequent printers.
While Microsoft recommends using identical printers, users often find it is possible to add newer printers from the same manufacturer using the driver for the oldest model printer in the pool.