These RAM sticks were working when removed from an Apple MacBook A1181 Laptop computer.

This Hynix RAM is perfect for upgrading your computer's memory. It comes in a set of two with a total capacity of 512 MB. Each module has a capacity of 256 MB and features a bus speed of PC2-5300 (DDR2-667). These DDR2 SODIMMs are perfect for a Mac Book or any other compatible computer.  This product is ideal for those who need to speed up their computer's performance and run multiple programs at once.