The PD3000 is a two line twenty character pole display that solve the classic "I wish I had an extra I/O port" problem. Logic Controls data pass-through process allows connection of multiple pole displays, cash drawers, printers and other devices to a single output port. Features: Available in Beige or Black Adjustable height: 8" to 24" 2-line display: 20 characters/line -5mm character height Interface options: USB, serial and parallel Automatic message scrolling User definable character Supports high speed protocol: up to 19.2k bps, 1 stop bit Matched optical lens for better viewing contrast Five adjustable viewing angles Product Reference: PD3000-9 - RS232 - 9F, Beige PD3000-9BL - RS232 - 9F, Black PD3000-USB - USB, Beige PD3000UB - USB, Black