Features It can most connection 5pcs driver and control 5pcs motor in the same time. It is with 4-wire limit switch to insure our safety movement. It is with relay port to control the CNC spindle. Working voltage is 5VDC and support with MACH3,EMC2,KCAM4 software. DB25 pin (PC PIN) The pin of the interface board Comment(signal) 1 Step 5 Fifth axis pulse 2 Step X X pulse 3 DIR X X axis direction 4 STEPY Y pulse 5 DIR Y Y axis direction 6 Step Z Z axis pulse 7 DIR Z Z axis direction 8 Step 4 Fourth axis pulse 9 DIR 4 Fourth axis direction 10 Limit-1 Limit input interface 1 11 Limit-2 Limit input interface 2 12 Limit-3 Limit input interface 3 13 Limit-4 Limit input interface 4 14 DIR 5 Fifth axis direction 15 Vacant 16 RLY Relay control 17 EN All axis enable 18-25 GND GND Package included 1x 5 Axis Interface Breakout Board 1x Parallel Cable