This usb c to db9 serial rs232 adapter is an ideal solution for connecting a serial rs232 device to a usb type c port the adapter allows point of sale terminals serial modems industrial equipment and other serial rs232 peripherals to interface directly with a usb type c port this adapter has a data transfer rate of over 230 kbps and uses no irqs so there are no irq conflicts multiple adapters may be used on a single computer allowing multiple serial devices to be connected simultaneously