On June 29, 1993, IBM released the first energy star computer, the IBM PS/2 E. The “E” stood for energy. But while it was undeniably more efficient than other desktop PCs, arguably it was a PS/2 in name only. To make the PS/2 E more efficient, IBM used a mashup of technology, including but not limited to borrowing technology from its Thinkpad laptops. To celebrate its green nature, IBM adorned it with a big green stripe across the front. Yes, the stripe was green, not the traditional IBM blue.

David Farquhar is a computer security professional, entrepreneur, and author. He has written professionally about computers since 1991, so he was writing about retro computers when they were still new. He has been working in IT professionally since 1994 and has specialized in vulnerability management since 2013. He holds Security+ and CISSP certifications. Today he blogs five times a week, mostly about retro computers and retro gaming covering the time period from 1975 to 2000.









