Raspberry Pi 1 model A+

It also has the same HDMI, sound/composite connector and microUSB connector for power

Unlike the Raspberry Model B+, there's only one USB port and no ethernet jack but it's also significantly smaller at 65mm x 56mm if you don't include overhang from the connectors.

Don't forget, you'll need a USB power supply with microUSB cable, and a microSD card with a Raspberry Pi OS on it (we suggest a Raspbian 4G card or NooBS 8G card)

Be sure to check out more of our awesome Raspberry Pi accessories including:

• Assembled Pi Cobbler Plus - The best way to break out your Pi's pins into a breakout board.  We also carry the Assembled T-Cobbler Plus that makes your breakout pins a bit easier to read but is less compact.
• Adafruit Pi Box Plus for the Raspberry Pi Model A+  - this is a great case to keep your Raspberry Pi Model A+ safe and sound.  We also carry the Pi Protector for Model A+ - our pocket-sized Pi Case.
• 8GB Card with NOOBS 1.39 - This is the fastest way to have a variety of operating systems on your pi.
• Bare 4 GB SD card - you'll need this to load the Raspbian/Debian image and is not included in a Pi computer purchase. Tested and works perfectly! We also have a wide range of pre-burned SD cards
• 5V @ 2A Switching Power Supply w/ 6' MicroUSB Cable - An all-in-one 5V 2A + MicroUSB cable power adapter that's perfect for powering your pi
• HDMI cable - required to connect a Pi to a monitor and is not included in a Pi computer purchase.  We also carry the flat version for a more sleek/stylish look.
• Ethernet cable - required if you want to connect your Pi to the Internet via a router
• USB WiFi Module - This is our recommended WiFi adapter, works out of the box with Pi with good range and speed
• Keyboards and Mice - We have a range of wired and wireless options
• A wide range of accessories and essentials
• Various small displays as well as nice Pi-compatible HDMI monitors in a range of sizes, from 2.5" to 10"