The OKI OKIFAX 4100 is a fax machine & a copier, which is an ideal option for home or small office. It is a LED - monochrome device with 2 lines by 20 characters display. This has a 256 KB standard memory. Its copying speed is up to 4 pages-per-minute with up to 600 x 600 dpi resolution. Its fax machine has a speed dialling for 45 stations, and 56 stations for broadcast transmission.