ASUS Eee pc 900 Boxed (Intel Celeron M, 512mb Ram, Linux) | eBay
Raspberry Pi Model B+ Linux Computer with 512 MB of RAM and 4 USB Ports
Lightweight Linux Distributions For Older PCs
Banana Pi BPi-M2 Zero Quad-core Allwinner H3 512MB DDR3 RAM Support Linux Android Open Source Development Single Board Computer - AliExpress
783170-01 - Ni - Controller, CompactRIO, cRIO-9067
4 Best Linux Distros for Older Hardware - Linux.com
Raspberry Pi Model B Linux Computer with 512 MB of RAM
16 Best Lightweight Linux Distributions for Older Computers
Amazon.com: WayPonDEV NanoPi NEO Plus2 Open Source 64-bit Mali450 GPU DDR3 Allwinner H5 Single Board Computer WiFi & Bluetooth 4.0 Super Tiny ARM Board Support Ubuntu Linux Armbian (512MB RAM+8GB eMMC) :
16 Best Lightweight Linux Distributions for Older Computers
Amazon.com: WayPonDEV NanoPi NEO Plus2 Open Source 64-bit Mali450 GPU DDR3 Allwinner H5 Single Board Computer WiFi & Bluetooth 4.0 Super Tiny ARM Board Support Ubuntu Linux Armbian (512MB RAM+8GB eMMC) :