LED Display Control System Hub18B Conversion Card with 16* Interface Output Features: All pins are treated by gold-plated with copper, with good contact performance The drive chip (74HC245) adopts of OR SM, ensuring stable performance The PCB adopts FR4-V0 glass fiber board, featuring high mechanical and dielectric properties The standardized output interface of this Hub conversion card is 2.54mm-2 x 8P. Clear screen printing on the board is easy for wiring Specification: Model: Hub18B Material: glass fiber Size: 9.5*9cm/3.7*3.5in Weight: Approx. 68g/2.4oz Interface definition: HUB18B(double/full color) instructions N.O instructions CLK 2 GND LAT 4 GND DR1 6 DG2 DG1 8 DR2 OE 10 GND A 12 GND B 14 GND C 16 D Package list: 1 x  Hub18B Conversion Card