User Port Connector C64 (24 Pin, black)
Amazon.com: User Port Commodore PET/CBM/64/c64/sx64/128/vic20 Connector 24 pin PCB Mount : Electronics
Servant64 – Commodore 64 USB Hardware – Vintage is The New Old
PET index - pinouts
Programming Electronics with the Commodore User Port Part 1: Blinking an LED - Retro Game Coders
little-scale: How To: Make A Commodore 64 MIDI Interface
SD2IEC Now available at Shareware Plus for the Commodore 64
Friday Fun: Making an LED blink...with a Commodore 64
Amazon.com: User Port Commodore PET/CBM/64/c64/sx64/128/vic20 Connector 24-pin Solder Eyelet : Electronics
DIY RS-232 Interface for Commodore C64 for under $15
Commodore 64 User Port Project Development PCB - Share Project - PCBWay
Commodore C64 User Port Breakout Board – www.retroguru.eu
User Port - C64-Wiki
The Commodore 64 User Port | Coronax's Project Blog
![larry:projects:mac_to_c64_serial_cable [Port Commodore]](https://portcommodore.com/dokuwiki/lib/exe/fetch.php?media=larry:projects:64mac.gif "larry:projects:mac_to_c64_serial_cable [Port Commodore]")
larry:projects:mac_to_c64_serial_cable [Port Commodore]
![Commodore Info Page - Articles: Commodore C64 - Pallet warehouse [en]](https://www.commodore-info.com/foto/info_pallet_warehouse_01.jpg "Commodore Info Page - Articles: Commodore C64 - Pallet warehouse [en]")
Commodore Info Page - Articles: Commodore C64 - Pallet warehouse [en]
/i/75317/products/2017-04-30T23%3A18%3A42.115Z-glink-lt-A02.jpg?1606306133 "GLINK-LT - Commodore 64 User Port RS-232 - VIC1011 from GGLABS on Tindie")
GLINK-LT - Commodore 64 User Port RS-232 - VIC1011 from GGLABS on Tindie
The Commodore 64 User Port | Coronax's Project Blog
Commodore C64 RS232 User Port · AllPinouts
User Port - C64-Wiki
