[. . . ] [. . . ] The 24-pin print head also provides a better print quality than 9-pin counter-parts for the printing of invoices, purchase orders, spreadsheets etc. Highlights: · OKI Printing Solutions reliability backed by 20, 000H MTBF · Optimised for high levels of throughput · Integrated USB and IEEE Parallel Standard Interfaces · Ability to print on 5-part forms · 4 million character ribbon life · Up to 473cps High Speed Draft · Low noise (55dB(A) in standard operation and 52dB(A) in quiet mode) CX4545MFP/ML5591 CX4545MFP General Speed and throughput Number of pins No. Non OKI Printing Solutions Original products may damage your printer's performance and invalidate your warranty. Oki Printing Solutions is the trading name of Oki Europe Ltd. Oki Systems (UK) Ltd. [. . . ] [. . . ]