라즈베리파이 400, 70달러

키보드 안에 라즈베리파이 4가 들어가는건데 괜찮네요

Raspberry Pi 400 specification
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 3.0 graphics
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