RAM/DDR3/4GB/1333MHz/204P/SO-DIMM/CIR-W3SUIK1304G

Please note:
B43 ,G41, G43 ,G45, P43, P45, Q43, Q45, H55, H57, P55, Q57 D2550, D2500, D2700, D425, D525, N2800
The above Intel chipsets do not support memory modules with 512Mx8DRAM chips.
If you are using above mentioned platforms, please choose memory modules with DRAM chips 128Mx8 or 256Mx8.