Setup & Operation10. UPS (Uninterruptible Power Supply)(4)Click the The [UPS Selection] dialog willappear.(5)Select the “SEIKO EPSON CORPORATION” from the [Select manufacturer] box.(6)Select the “RC420 UPS” from the [Select model] box.(7)Select the “COM4” from the [On port] box.(8)Click the button in the [UPS Selection] dialog.The [Power OptionsProperties] dialog will appear.RC420 Rev.997