Universal null modem cable 2 x DB9 female / 2 x DB25 female.
Sold in several lengths.
Normally, you cannot connect the COM ports on two PCs to each other, as they are both DTE type (see chapter 12), but using a null modem cable can be done. The null modem cable "crosses" the transmit and receive wires so that two DTE units (PCs or other types of terminals) or two DCEs can be put together. Additionally, Windows supports direct cable connection through the serial port. At each end, one DB9 female connector and one DB25 female connector are mounted so that the cable can be used on PCs with both types of serial ports.
28 AWG
Null modem cable 1 x DB9 Han / 1 x DB9 She.
negotiated in several lengths
Null modem adapter
1 x DB9 male and 1 x DB9 male connector
With screws for fixed mounting
Zero modem cable with 2 x DB9 female, 28 AWG
Null modem cable 1 x DB9 male / 1 x DB9 female.
Sold in several lengths
