OKI MICROLINE 3320. Maximum resolution: 240 x 216 DPI, Maximum print size: A4 (210 x 297 mm). Maximum print speed: 435 cps, Normal print speed: 290 cps, Line spacing: 0.5 mm. Print head: 9 pin, Standard printer languages: Epson FX, IBM ProPrinter. Buffer size: 64 KB. Standard interfaces: USB