Question: what is the difference between ct500mx500ssd1(z) and ct500mx500ssd1?
Answer: Amazon.com: Customer Questions & Answers. Which is the difference between ct500mx500ssd1 and ct500mx500ssd1 (z)? ... The letter (Z) at the end of part number CT500MX500SSD1 signifies that you will receive your Crucial product in Amazon Certified Frustration Free packaging.