The Apple iMac G3 400MHz 15in All-in-One is a vintage computer from 2000 that features a PowerPC G3 processor, 64MB RAM, and a 10GB HDD. It comes in a red and white color scheme with a 15-inch screen size and a dedicated ATI Rage 128 Pro GPU. This all-in-one desktop is most suitable for casual computing and includes features such as an optical drive, built-in speakers, and a built-in microphone. It runs on Mac OS 9 and has connectivity options like Ethernet and USB 1.0/1.1. An ideal choice for collectors or those looking for a nostalgic piece of Apple history.