Okidata ML491 24-Pin Impact Printer (ML-491, ML 491, 62419001) Rated at 20,000 hours MTBF , 3-year standard warranty , Print speeds up to 475 cps , Integrated USB and IEEE Parallel connectivity standard, Optional OkiLAN 6120i 10/100 Base-T Ethernet internal print server , Crisp, clear printing - on letterhead or 5-part forms , Expandable head gap - accommodates multi-part forms and cut-sheet stock including labels and stiff index stock.