This is USB Console Cable FTDI chipset - USB to RJ45 for Console Cable. It is used to configure the switch in digital headend or servers. This is easy to use solution where you can connect directly your switch to your laptop. Where cable length is 1.5 meter.

usb port serial cable usb to rj45 console cable, connects to any usb port on your laptop directly to a cisco console port. no adapters needed. it is for cisco console port for cisco 1000, 1600, 2500, 2600, 3600 series routers, catalyst 3560 switch pinout, and more operating system support drivers are available which allow ftdi devices to work with the following operating systems windows 10 windows 8.1 windows 8.1 x64 windows 8 windows 8 x64 windows server201windows server 2008 r2 windows 7 windows 7 x64 windows server 2008 windows server 2008 x64 windows vista windows vista x64 windows server 2003 windows server 2003 x64 windows xp windows xp x64 windows me windows 98 linux mac os x mac os 9 mac os 8 windows ce.net (version 4.2 and greater) android windows rt advantages 1.no adapters needed to get it working 2.no more db-9 adapters 3.no more mickey mouse prolific driver problems 4.no more fake prolific chips 32 and 64 bit operating systems are both supporter package included 1* ftdi usb to rj45 cable

If still you wants to have more details about RS232 cables then visit https://www.headendinfo.com/usb-rj45-console-cable/