Convert a usb port into 16 rs232 serial ports in an industrial rack mountable chassis and daisy chain multiple hubs for a scalable solution heres an easy and cost efficient way to add rs232 serial capability to your industrial setting this 16 port usb to serial adapter hub features a sturdy rack mountable chassis and supports daisy chaining so you can connect multiple hubs together to increase your serial device port count this rack mountable usb serial hub ftdi lets you add 16 ser