Epson TM-U220B-676, Dot matrix, POS printer, Wired, RS-232C, Gray, USB Epson TM-U220B-676. Print technology: Dot matrix, Type: POS printer. Connectivity technology: Wired, Serial interface type: RS-232C. Product color: Gray. Power source type: USB. Width: 160 mm, Depth: 248 mm, Height: 138.5 mm