HP LASERJET ENTERPRISE MFP M635H 3IN1 MONO PRINTER (7PS97A) - Functions: Print, Copy, Scan, Optional Fax, Print Speed: Up to 65 ppm, Resolution: Up to 1200 x 1200 dpi, Memory: 4.0 GB, Display: 8.0-in (20.3 cm) Color Graphics Display (CGD) with Touchscreen; Rotating (adjustable angle) Display; illuminated Home Button (for quick return to the Home menu), Connectivity: HP Jetdirect 2900nw Print Server J8031A; HP Jetdirect 3000w NFC/Wireless Accessory J8030A; HP Jetdirect 3100w BLE/NFC/Wireless Accessory 3JN69A, Paper Size: 100-sheet Multipurpose Tray 1: 3 x 5 to 8.5 x 14 in; 550-sheet input Tray 2: 3.9 x 5.8 to 8.5 x 11.7 in; 550-Sheet Optional Feeder: 3.9 x 5.8 to 8.5 x 14 in; 75-Sheet Envelope Feeder: 3.5 x 5.8 to 7 x 10 in, Paper Handling: 100-sheet Multipurpose Feeder, 550-sheet Input Feeder, 150-sheet Automatic Document Feeder, Operating Systems: Windows Client OS (32/64 bit)-, Win10, Win8.1, Win7 Ultimate, Mobile OS-, iOS, Android, Mac-, Apple macOS Sierra v10.13, Apple macOS High Sierra v10.14, Apple macOS Mojave v10.15, Discrete PCL6 Printer Driver