1pcs of 4GB PC2-5300 DDR2-667 200pin SODIMM.
Manufactured By Samsung, Kingston, Micron or other
30 day money back guarantee
Lifetime warranty for exchange
Compatible with:

Apple MacBook Pro 15.4-inch Intel Core 2 Duo 2.4GHz (MB133LL/A)

Max Memory 6GB by using 1 x 4gb and 1 x 2gb.
Sockets 2