- Plastic seal with some rips, box with some wear.Enhance your vintage computing experience with this New In Box (NIB) IBM Easy Options Dual Speed Two Port Game Card, Model GC527. Perfect for retro PC gaming, this expansion card provides two 15-pin game ports, allowing you to connect two joysticks for simultaneous action. Designed for easy do-it-yourself installation, it supports both XT and AT-type computers with an 8-bit or 16-bit ISA expansion slot. The card operates at a dual speed of 4.5-66 MHz, ensuring compatibility with a wide range of classic IBM PC and compatible systems. Get the competitive edge for your arcade-style video games with this rare find. Still sealed in its original packaging from 1993, this is a great addition for collectors or enthusiasts looking to restore a period-accurate gaming setup.