... .TTL or CMOS level output can be customized Specifications:1.USB 3.0 to RS232 3.Welcome OEM/ODM Packaging & Delivery ... or customized6.Output port can be customized.Features:1.FTDI usb UART cable2.VCC(5v), GND, TX, RX, CTS, RTS, RI ... , we will promptly pay compensation to customers without any charge. USB to RS232 8P8C high quality cable