HP Color LaserJet Enterprise M554dn Printer (7ZU81A) - Processor speed: 1.2 GHz, Functions: Print,Print speed color: Up to 33 ppm , Resolution Technology: HP ImageREt 3600, Pantone Calibrated, Memory: 1 GB, Display: 6.86 cm (2.7-in) QVGA LCD (colour graphics) display with 24-key pad, Connectivity: 1 x Hi-Speed Device USB 2.0, 2 x Hi-Speed USB 2.0 Host, 1 x Gigabit/Fast Ethernet 10/100/1000 Base-TX network, Media sizes supported: Tray 1: A4, RA4, A5, B5 (JIS), B6 (JIS), 10 x 15 cm, A6, 16K, envelopes (B5, C5 ISO, C6, DL ISO); Custom: 76 x 127 to 216 x 356 mm; Tray 2: A4, A5, B5 (JIS), B6 (JIS), 10 x 15 cm, A6, 16K; Custom: 102 x 148 to 216 x 297 mm; Optional Tray 3: A4, RA4, A5, B5 (JIS), 16K; Custom: 102 x 148 to 216 x 356 mm, Paper handling input: 100-sheet multipurpose tray, 550-sheet input tray 2, Paper handling output: 250-sheet output bin, Compatible operating systems: Windows Client OS (32/64 bit)-, Win10, Win8.1, Win7 Ultimate, Mobile OS-, iOS, Android, Mac-, Apple macOS High Sierra v10.13, Apple macOS Mojave v10.14, Apple macOS Catalina v10.15