Interworld Electronics have further expanded Quatech’s FreedomUSB serial adapter range to include eight and sixteen port versions. The ESU-100 provides eight RS-232 serial ports while the ESU-200/300 provides eight RS-422 or RS-485 ports.
They are also plug-and-play and hot swap capability for easy installation.
Quatech serial USB adapters offer several attractive features that make them particularly convenient and easy to use. The adapters provide multiple ports via a single box with easily accessible connections. All the adapters are bus powered, so no external power supply is needed.
All Quatech serial USB adapters enumerate themselves as standard COM ports, and can transfer data at speeds up to 460.8 kbps-a significant improvement over the 115.2 kbps maximum for a standard serial port.
The adapters are equipped with 16550 UARTs containing 16-byte FIFOs. These FIFOs, along with the FIFOs in the USB microcontroller, help relieve the CPU of excessive interrupts by buffering received and transmitted data, making Quatech USB adapters ideal choices for heavy multi-tasking environments.

For More Information or to Request a Quote Contact Interworld Electronics