C3e-mb-pcb-v4 -

The 6 COM ports (with 485 support) and wide voltage input (9V–36V) allow the C3E-MB-PCB-V4 to control CNC machines, conveyors, and SCADA terminals.

As a specialized embedded board, you will not find the C3E-MB-PCB-V4 on mainstream consumer sites like Amazon or Newegg. Instead, look at: c3e-mb-pcb-v4

Features ultra-low-power modes, including deep sleep consumption as low as 5 µA for battery-sensitive applications. Hardware Design and Board Layout C3E MB PCB V4 Documentation | PDF - Scribd The 6 COM ports (with 485 support) and