The HB52RD328DC is a 16M x 64 x 2 banks Synchronous Dynamic RAM Small Outline Dual In-line Memory Module (S.O.DIMM), mounted 32 pieces of 64-Mbit SDRAM (HM5264405FTB) sealed in TCP package and 1 piece of serial EEPROM (2-kbit EEPROM) for Presence Detect (PD). An outline of the product is 144-pin Zig Za g Dua l tabs socke t type compa ct and thin pac kage . The ref ore, it make s high density mounting possible without surf ace mount tec hnology. It provide s common data inputs and outputs. De coupling ca pac itor s ar e mounted beside TCP on the module board. Do not push the cove r or drop the modules in orde r to prote ct fr om mec hanica l def ec ts, which would be electrical defects.