Specification Binding : Electronics Brand : MemoryMasters EAN : 0638266991758 Label : Third Party Manufacturer : Third Party Model : LYSB018YG8TPE-ELECTRNCS ProductGroup : CE ProductTypeName : OFFICE_ELECTRONICS Publisher : Third Party Studio : Third Party Title : 128MB Memory Kit 4 x 32MB DRAM SIMM for Cisco Router 3640. Equivalent to MEM3640-4X32D (MemoryMasters)