Texas Instruments Ti-99/4A Joystick Adapter (1 port)
Extra Joystick ports on STE? - Atari ST/TT/Falcon Computers - AtariAge Forums
Inside the Atari 800 - Slideshow - ARN
Atari 5200 4 port Console in Original Box 4 games controller power supply & rf | eBay
Atari 2600 VCS Video Computer System Information Specs — Gametrog
Male Joystick Port - Atari 2600, 7800, Colecovision - NOS CO19062
Atari ST Interfaces / Connectors / Cables Information
The #Atari 800 Computer had improved graphics that made arcade ports awesome | images
atari-5200-vcs-video-computer-system-information-specs — Gametrog
Bluetooth Wireless Atari Joystick and Paddle Adapter - 2 DB9 Ports | eBay
General Purpose port - MSX Wiki
File:Atari-5200-4-Port-Console-FR.jpg - Wikimedia Commons
2 Port 13 pin DIN RGB Video Switch Box for Atari ST
Atari 2600 | Shocking Videogame Secrets!
Atari 5200 Console 4 port seller reconditioned with Power & A/V MOD 77000052100 | eBay
Atari Jaguar Controller Port Cover by Humble Bazooka | Download free STL model | Printables.com
File:Atari joy-port.svg - Wikimedia Commons
Atari 5200 4-Port Switchbox Bypass Modification & Cap Kit
Atari 2600 hardware - Wikipedia
Atari Arcade Joystick Port Plate by RocketSquid | Download free STL model | Printables.com
Amazon.com: USB Adapter for Atari Joystick, Paddle, Driving by iCode, Four Port Multiplayer, Pro Edition : Video Games
Atari joystick port - Wikipedia
Why the Atari 2600's Joystick Port Became a De Facto Standard
Atari 2600 Controller Port Replacement (New Source) - Hardware - AtariAge Forums
File:Atari-5200-4-Port-Console-Open-wControllers.jpg - Wikimedia Commons
File:Rear ports of original Atari 520ST (crop and filter).jpg - Wikimedia Commons
