![What is the difference between a Null Modem and Straight Through Serial Cable? | Modem, Serial port, Serial What is the difference between a Null Modem and Straight Through Serial Cable? | Modem, Serial port, Serial](https://i.pinimg.com/originals/83/d1/42/83d14217a03cd8cd6841b5746722e060.jpg)
What is the difference between a Null Modem and Straight Through Serial Cable? | Modem, Serial port, Serial
![Tripp Lite 18in USB to Null Modem Serial Adapter FTDI w/ COM Retention M/F 18" - serial adapter - USB - RS-232 Tripp Lite 18in USB to Null Modem Serial Adapter FTDI w/ COM Retention M/F 18" - serial adapter - USB - RS-232](https://cc.cs.1worldsync.com/inlinecontent/mediaserver/tri/679/16e/67916efbe22a478796b12a6e66756228/original.jpg)
Tripp Lite 18in USB to Null Modem Serial Adapter FTDI w/ COM Retention M/F 18" - serial adapter - USB - RS-232
StarTech.com Serial Null modem cable - DB-9 (F) - DB-9 (F) - 3 m - SCNM9FF - Serial Cables - CDW.com
![DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX RX line for Data Communication 15 Feet Black - Newegg.com DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX RX line for Data Communication 15 Feet Black - Newegg.com](https://c1.neweggimages.com/ProductImage/AP81D200902S745X.jpg)
DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX RX line for Data Communication 15 Feet Black - Newegg.com
Tripp Lite 6ft Null Modem Serial DB9 RS232 Cable Adapter Gold F/F 6' - null modem cable - DB-9 to DB-9 - 6 ft - P450-006 - Serial Cables - CDW.com
![Amazon.com: Letotech Cross Wired USB Serial Cable DB9 CP2102 ZT232 USB RS232 to DB9 Null Modem Cable PC Control TV Cable (Null Modem Pinout) : Electronics Amazon.com: Letotech Cross Wired USB Serial Cable DB9 CP2102 ZT232 USB RS232 to DB9 Null Modem Cable PC Control TV Cable (Null Modem Pinout) : Electronics](https://m.media-amazon.com/images/I/71o+QE2FviL.jpg)