dev >> raspberry pi 400+

The Raspberry Pi 400 was released in November 2020. A modern example of a keyboard computer, it features 4 GB of LPDDR4 RAM on a custom board derived from the existing Raspberry Pi 4 combined with a keyboard in a single case. The case was derived from that of the Raspberry Pi Keyboard. A robust cooling solution (i.e. a broad metal plate) and an upgraded switched-mode power supply allow the Raspberry Pi 400's Broadcom BCM2711C0 processor to be clocked at 1.8 GHz, which is 20% faster than the Raspberry Pi 4 upon which it is based.

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A keyboard computer is a computer which contains all of the regular components of a personal computer, except for a screen, in the same housing as the keyboard. The power supply is typically external and connects to the computer via an adapter cable. The motherboard is specially designed to fit inside, and the device is larger than most standard keyboards. Additional peripheral components such as a monitor are connected to the computer via external ports. Usually a minimum of storage devices, if any, is built in.

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RASPBERRY PI 400 SPECS

Broadcom BCM2711 quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.8GHz

4GB LPDDR4-3200

Dual-band (2.4GHz and 5.0GHz) IEEE 802.11b/g/n/ac wireless LAN

Bluetooth 5.0, BLE

Gigabit Ethernet

2 × USB 3.0 and 1 × USB 2.0 ports

Horizontal 40-pin GPIO header

2 × micro HDMI ports (supports up to 4Kp60)

H.265 (4Kp60 decode); H.264 (1080p60 decode, 1080p30 encode); OpenGL ES 3.1, Vulkan 1.0

MicroSD card slot for operating system and data storage

78- or 79-key compact keyboard (depending on regional variant)

5V DC via USB connector

Operating temperature: 0°C to +50°C ambient

Maximum dimensions 286 mm × 122 mm × 23 mm

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