Refurbished IBM 6400-010 Line Matrix Printer, 10000 LPM, Ethernet IPDS, Quiet Cabinet. The IBM 6400 Model 010 is reliable and has a print speed of up to 1000/750/400 LPM in Draft, DP (Data Processing), and NLQ (Near Letter Quality) print modes. The IBM 6400 series of printers are specifically designed for high- volume printing environments. These printers are flexible and can be attached to virtually any IBM or non-IBM system. IBM M.A.Q.