25 pins.
24
24
notebook IDE connector= 44-pins Desktop IDE connector= 40-pins
I think AT used 20 pins, and ATX introduced 24 pins.
34 pins in a FDD cable connector.
The number of pins on a computer monitor can vary depending on the type of connection it uses. For example, a VGA connector typically has 15 pins, while a DVI connector can have 24 pins for dual-link or 18 pins for single-link connections. HDMI connectors have 19 pins, and DisplayPort connectors have 20 pins. Each type of connector serves different video and audio transmission needs.
An RJ-45 connector has 8 pins.
A DIN connector has a 5-Pin connector
24 pins
== == 24-pins
The connector is usually a DB9, though it's possible that not all 9 pins will be used.
32 Pins on a 4x connector.