Kingston KVR533D2S4/512 512MB DDR2-533 64x64 SODIMM Notebook Memory
Specifications:

Mfr Part Number: KVR533D2S4/512
Type: SODIMM
Capacity: 512MB
Speed: DDRII PC4200 533MHz
Size & Bit: 64M X 64
Pin: 200
ECC: No
Registered: No
1.8V, CL4
Package: Retail