This model is essentially the same as the CLX-6200FX and CLX-6210FX, but differs in output potential and has increased memory storage. Print and copy speed has been increased to 24ppm in A4 for colour and mono, and duplex capabilities are built-in, increasing productivity and allowing for a more efficient use of both sides of printed paper. Direct USB allows for communication to be had with external devices without the assistance of a PC. The input capacity of the CLX-6240FX is 250-sheets, while the multipurpose tray holds an additional 100 sheets. For businesses requiring additional efficiency and productivity, an optional second cassette feeder can be installed. Lastly, the fax holds 4GB of memory, while the general storage features an increase from 128MB to 256MB of memory.