# Nullmodem (9-9) Cable

Use this cable between two DTE devices (for instance two computers).

(To Computer 1).
(To Computer 2).

9 PIN D-SUB FEMALE to Computer 1.
9 PIN D-SUB FEMALE to Computer 2.

| D-Sub 1 | D-Sub 2 |
--- | --- | --- | ---
Receive Data | 2 | 3 | Transmit Data
Transmit Data | 3 | 2 | Receive Data
Data Terminal Ready | 4 | 6+1 | Data Set Ready + Carrier Detect
System Ground | 5 | 5 | System Ground
Data Set Ready + Carrier Detect | 6+1 | 4 | Data Terminal Ready
Request to Send | 7 | 8 | Clear to Send
Clear to Send | 8 | 7 | Request to Send

Contributor: Joakim Ögren, Drew Sullivan, Niklas Edmundsson