The Raspberry Pi Foundation has gotten us used to wait for a while between new hardware releases, but right after having announced Raspberry Pi CM4 and CM4 Lite a couple of weeks ago, the company has now introduced Raspberry Pi 400 keyboard computer with many of the same features as Raspberry Pi 4 single board computer, but as a fully integrated computer inside a 78-key keyboard, and equipped with a slightly faster Broadcom BCM2711C0 processor clocked at 1.8 GHz instead of 1.5 GHz.
Raspberry Pi 400 keyboard computer specifications:
- SoC – Broadcom BCM2711C0 quad-core ARM Cortex-A72 processor @ 1.8GHz
- System Memory – 4GB LPDDR4-3200 SDRAM
- Storage – Push-push MicroSD card slot for OS (USB boot also works)
- Video & audio output – 2x micro HDMI ports up to 1 x 4Kp60, or 2 x 4Kp30
- Gigabit Ethernet RJ45
- 2.4GHz and 5GHz 802.11.b/g/n/ac WiFi 5, Bluetooth 5.0 and BLE (Bluetooth Low Energy) with PCB antenna
- USB – 2 x USB3.0 Port + 1 x USB2.0 Port
- User Input – 78-key mini keyboard with US, UK, FR, DE, ES or IT Layout
- Expansion – 40-pin GPIO horizontal header with
- Misc- Power button for software on/off, Kensington lock hole, and a heatsink for heat dissipation
- Power Supply – 5V/3.0A via USB type C connector with 27x GPIO, UART, I2C bus, SPI bus with two chip selects, 5V, 3.3V, and GND
- Dimensions – 285 x 122 x 21mm
All ports and the 40-pin GPIO header can be conveniently found on the back of the keyboard PC. Most Raspberry Pi 4 features are included, except for the CSI (camera) and DSI (display) connectors, and PoE support. A USB 2.0 port is gone, probably for the keyboard itself.
Raspberry Pi 400 is software-compatible with RPi 4 and supports Raspberry Pi OS as well as 3rd party operating systems such as Ubuntu, OSMC, and so on. I remember I first got my taste of computers at school with a Thomson TO7 keyboard computer, although Commodore 64 might be more popular around the world. So I suspect it may be popular in schools since it’s more compact and easier to move around than a Raspberry Pi plus a separate keyboard.
You’ll find more details in our teardown and our Raspberry Pi 400 review where we focus on thermal cooling and differences against Raspberry Pi 4. The first keyboard computer from the Raspberry Pi Foundation can be purchased for $70 plus shipping and taxes in the usual places including RS Components, Cytron, Element14, Seeed Studio, and many others. There’s also a $100 kit with the keyboard computer, power supply, mouse, 16GB MicroSD card pre-loaded with Raspberry Pi OS, a micro HDMI to HDMI-A
cable, and a user’s guide.