The RS-232C Serial Interface Card installs into the printer's internal port. It supports a standard RS-232C interface using a 25-pin D-shell female connector. For use with Lexmark printers that contain an open slot. -Configuration settings for the serial interface are available using the Serial Opt Menu from the printer's operator panel. Baud rates from 1200 to 115.2K are supported. -Baud rates:1200, 2400, 4800, 9600*, 19.2K, 38.4K, 57.6K and 115.2K; 7 bit or 8* data bits; Parity - Odd, Even, None*, Ignore; Start and Stop Bits; DSR/DTR Data Flow control with DTR pacing, DTR/DSR, XON/XOFF, XON/XOFF/DTR, or XON/XOFF/DTR/DSR flow control protocols. -RS-422 is not supported. -See the Technical Reference for more information about the serial and parallel interfaces. Specification: Print technology Number of print cartridges 1 Print technology Laser Printing colours Black Economical printing Yes Duplex printing Yes Maximum resolution 600 x 600 DPI Colour No Input capacity Maximum input capacity 1400 sheets Output capacity Maximum output capacity 250 sheets Print quality Print technology Laser Network ready Yes Duplex printing Yes Maximum resolution 600 x 600 DPI Colour No Memory Memory slots 1 Maximum internal memory 288 MB Internal memory 32 MB Software Windows operating systems supported Yes Mac operating systems supported Yes Linux operating systems supported Yes Sound emission Noise level (idle) 28 dB Printing Print technology Laser Time to first page (black, normal) 8 s Economical printing Yes Duplex print speed (black, normal quality, A4/US Letter) 19 ppm Print speed (black, normal quality, A4/US Letter) 26 ppm Duplex printing Yes Maximum resolution 600 x 600 DPI Colour No Features Print technology Laser Duplex printing Yes Colour No Number of print cartridges 1 Printing colours Black Page description languages PCL 6,PostScript 3,PPDS Input & output capacity Total input capacity 650 sheets Total output capacity 250 sheets Maximum output capacity 250 sheets Maximum input capacity 1400 sheets Paper handling Maximum ISO A-series paper size A3 ISO A-series sizes (A0...A9) A3,A4,A5 Non-ISO print media sizes Executive, Folio, Letter, Statement, Universal, Legal JIS B-series sizes (B0...B9) B4 Envelopes sizes 7 3/4,9,10,DL Paper tray media types Card stock,Envelopes,Plain paper,Transparencies Ports & interfaces Standard interfaces Ethernet,USB 2.0 Optional connectivity Parallel,Serial (RS-232),Wireless LAN Performance Windows operating systems supported Yes Mac operating systems supported Yes Linux operating systems supported Yes Noise level (idle) 28 dB Memory slots 1 Maximum internal memory 288 MB Internal memory 32 MB Sound pressure level (printing) 51 dB Network Network ready Yes Wi-Fi No Ethernet LAN Yes Design Built-in display No Product colour White Technical details Noise level (idle) 28 dB Built-in display No Product colour White System requirements Windows operating systems supported Yes Mac operating systems supported Yes Linux operating systems supported Yes Weight & dimensions Package depth 24.4" (619.8 mm) Width 18.1" (459.7 mm) Weight 63.9 lbs (29 kg) Package width 24" (609.6 mm) Package height 40.9" (1038.9 mm) Height 15.4" (391 mm) Depth 19.7" (500.3 mm) Package weight 72.1 lbs (32.7 kg) Packaging data Package depth 24.4" (619.8 mm) Package width 24" (609.6 mm) Package height 40.9" (1038.9 mm) Package weight 72.1 lbs (32.7 kg)