Dafensoy USB to RS232 Serial Adapter, USB A Male to DB9 Female Serial Converter Cable,Suitable for connecting computers and various serial devices.1.8M(6Feet) Black This is a USB A Male to RS232 DB9 Female Serial Converter Cable. Note that this model does not contain a chip, it is just an adapter cable Suitable for connecting computers and various serial devices, such as cash registers, printers, access control systems, scanners, barcode printers, LED displays, etc. Suitable for multiple systems Windows 10, 8.1, 8, 7, Vista, XP, Linux and Mac OS X, macOS,