That comes via the standard 40-pin GPIO header on the full-sized boards. But in order to shrink down the size, the Raspberry Pi Zero had to forego the header while still retaining the GPIO contacts.

40 Pin Raspberry Pi PCB GPIO Quick Connect Clip. 2:14 pm November 7, 2017 By Julian Horsey. ... The PCB quick connect clip even allows you to work on headers which are smaller than 40 pin.

But the new model has the same microSD card reader and 40-pin GPIO connector as the Model B+. Other features include a Broadcomm BCM2385 ARM11 processor, 256MB of RAM, and HDMI output.

Seeed Studio has introduced a new router board featuring two Gigabit Ethernet ports, HDMI and USB ports, a microSD card reader, a 40 pin GPIO header, and a tiny OLED display. The board measures ...

The Raspberry Pi has been the basis for many cool projects. Even so, Models A and B have been criticized for having only a handful of GPIO pins available. Sure, the new Model B+ has a 40-pin GPIO h… ...