4MB 72 Pin SIMM RAM Stick AZEN Vitelic APO0251B Vintage Memory Module 1990s Upgrade

Vintage 72-pin SIMM RAM module labeled 4MB with AZEN branding and Vitelic APO0251B chips. A classic memory upgrade stick from the early 1990s, perfect for retro computing enthusiasts. Includes one module. Sticker intact. No corrosion or bent pins. These vintage RAM sticks are untested. I don’t have compatible hardware to verify functionality, but they appear to be in excellent physical condition—no bent pins, corrosion, or visible damage. All information provided (capacity, speed, model numbers, etc.) has been sourced online and may not be 100% accurate, as documentation for vintage components can be limited or inconsistent. Please do your own due diligence to confirm compatibility and specs before purchasing. These are being sold as collectible or legacy parts, with no guarantees expressed or implied.