Features: All pins are treated by gold-plated with copper, with good contact performance. The drive chip (74HC245) adopts of high quality 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: HUB73A Interface Definition: HUB73A (full-color scan) N.O Description N.O Description 1 DR1 2 DG1 3 DB1 4 DR2 5 DG2 6 DB2 7 DR3 8 DG3 9 DB3 10 DR4 11 DG4 12 DB4 13 GND 14 A 15 B 16 C 17 CLK 18 LAT 19 OE 20 GND Size: Approx. 9.5 x 9cm / 3.7 x 3.5inch Weight: Approx. 69g / 2.4oz Package List: 1 x LED Adapter Board Note: The D signal in the control card needs to be set to SCLK to enable 2/4/6/8 output work. 1All pins are treated by gold-plated with copper, with good contact performance 2The drive chip (74HC245) adopts of high quality OR SM, ensuring stable performance 3The PCB adopts FR4-V0 glass fiber board, featuring high mechanical and dielectric properties 4The standardized output interface of this Hub conversion card is 2.54mm-2 x 8P 5Clear screen printing on the board is easy for wiring