DB9 Mini Gender Changer Female/Female with Null-Modem wiring.
Swaps: RxData & TxData lines (PINs 2, 3)RTS & CTS lines (PINs 7. 8)DTR & DSR, DCD [CD] lines (PINs 4 & 6,1)
Does NOT pass pins 1 or 9.
For product that passes all pins including 1 and 9 (commonly used to provide power to RS232 peripheral), get this device