Cool Pi 4 Model B is a powerful alternative to Raspberry Pi 4 SBC with mostly the same form factor and interfaces but equipped with a Rockchip RK3588S
ROCK Pi 4 Model C+ SBC features 1.5 GHz Rockchip RK3399-T CPU, dual HDMI output - CNX Software
EmbedFire LubanCat 4 card computer - A Rockchip RK3588S dev board with a mini PCIe socket for WiFi or 4G LTE - CNX Software
NComputing RX420(HDX) Raspberry Pi 4 Thin Client Works with Citrix HDX - CNX Software
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CNX-Software] - Cool Pi 4 Model B – A much faster alternative to Raspberry Pi 4 SBC - SBC News - Armbian Community Forums