Pros: Inexpensive, thin, runs cool

Cons: smaller size makes it a challenge in some machines

Overall Review: For everyone having problems installing this in a 1545, it does work, but due to the nature of the frame and the thinner drive, it takes a little finesse to get it into the machine right. What is happening is the drive is going under the connector not into it. I taped the frame to the connector end of the hard drive, stood the laptop upright with the drive slot facing up. You then slide the drive in slowly and it will make the connection. You can also take the palmrest off of the machine and guide it in visually.