512MB PC133 144-Pin SODIMM Laptop RAM – WinSystems Qimonda Chips – Fully Tested
High-Quality 512MB PC133 SODIMM Module
Brand: WinSystems
Memory Chips: Premium Qimonda (Infineon) HYB39S256800FF-7
Speed: PC133 / 133MHz SDRAM
Form Factor: 144-Pin SODIMM (Laptop / Notebook)
Condition: Used – Clean & Fully Tested WorkingProduct Highlights:

• Assembled in USA 
• Features high-grade Qimonda DRAM chips known for excellent reliability in vintage systems
• Low-density design – ideal for older laptops that require it
• Gold contacts for good conductivity and long-term reliability

This 512MB PC133 SODIMM is perfect for upgrading or repairing early 2000s laptops and notebooks, including popular models from Dell, IBM ThinkPad, HP, Toshiba, and even some Apple PowerBook G3/G4 systems that support PC133 memory.Whether you're restoring a classic laptop, building a retro gaming rig, or maintaining legacy industrial/embedded equipment, this module delivers dependable performance.Detailed Specifications:

• Capacity: 512MB (1 x 512MB)
• Type: DDR1 SDR SDRAM (PC133)
• Speed: 133 MHz
• CAS Latency: CL3
• Pins: 144-Pin SODIMM
• Voltage: 3.3V
• Part Reference: SODIMM144-G-133-512M / WinSystems 512MB

Condition: Used in excellent working order. Fully tested with MemTest86 – no errors detected. Shows normal light signs of age and previous use (see photos). No bent pins or major damage.
Important Compatibility Note:
This is DDR1 (PC133) 144-pin SODIMM memory. It is NOT compatible with DDR2, DDR3, or DDR4 laptops. Please double-check your system specifications before purchasing.
Country of Origin: Assembled in USA
What's Included:
1 × 512MB PC133 SODIMM RAM module (as pictured)
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