Check the listing for details. C10 - BI-Directional Parallel Port CNC Breakout Board. Condition: New. Listed at 25.30 USD. OVERVIEW This card provides an easy way of interfacing your inputs and outputs from your parallel port. It provides terminals for the connections and conditions the signals for use in CNC applications. FEATURES: IEEE 1284 Standard compatible. PULL-UP or PULL-DOWN selection for inputs. Buffered inputs and outputs. Bidirectional pins 2-9. Output pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 16, 17. Or 1, 14, 16, 17. Input pins 10, 11, 12, 13, 15. Or 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15. Input and output pins with the close-by ground or +5vdc connections Input pins 10, 11, 12, 13, 15. Input and output pins with the close-by ground or +5vdc connections External Enable Pin (EN). Works directly with popular CNC hardware and software. All TTL 5VDC signals. Screw-On connections for all terminals. Status LEDs for enable. Please note that we have currently updated the design of the board. We use the exact same circuits, just updated to newer and smaller componets, updated the manufacturing process to SMD and added and status LED, so now it has a green LED that will light when outputs are enabled.