PERFORMANCE: Allow you connect 9 pin serial cable/device with no matter male or female end. CONFIGURATION: These DB9 adapters are constructed of nickel plated and have precision-made connectors for increasing corrosion protection,offering lossless signal and ensuring long using life. EASY TO USE: Plug and play,no driver needed,serial ports soldering free.Super user-friendly. APPLICATIONS: Widely compatible with PC, Modem,Printer,Scanner,Cashier,POS Machine and more. PACKAGE CONTENT: COST-EFFECTIVE 6-PACK Serial RS232 DB9 Connector include 3 x Male-Male,3 x Female-Female Mini Gender Changer.