... 2.0 to RS232/DB-9 Serial Adapter with removable Jack Screws By PL FeaturesChipset: ... Adapter with removable Jack Screws ABOUT FACTORYWe are a professinal manufactuer of all kinds of adapter ,such as telephone adapter,USB adapter ,SATA adapter,HDMI adapter,vga adapter ... ,power adapter,etc.Our USB to RS232 adapter are ...