MODEL- CT25672AF667       VENDOR- CRUCIAL TECHNOLOGY

FEATURES- DDR2-667 FB Module- 2GB (2048 MB)
       240-pin DIMM, DDR2-PC5300, CL=5, FULLY BUFFERED, ECC, DDR2-667,
         1.8V, 256Meg x 72.
       A dual inline memory module (DIMM) consists of a number of memory
        components (usually black) that are attached to a printed circuit
        board (usually green). The gold pins on the bottom of the DIMM
        provide a connection between the module and a socket on a larger
        printed circuit board. The pins on the front and back of a DIMM are
        not connected to each other.
       240-pin fully buffered DIMMs (FBDIMMs) are used to provide DDR2
        SDRAM memory for servers and motherboards that use FBDIMM
        technology, as opposed to conventional registered DIMM (RDIMM)
        technology. DDR2 is a leading-edge generation of memory with an
        improved architecture that allows it to transmit data very fast.
        FBDIMM technology utilizes an advanced memory buffer that allows
        modules to be connected in series -- meaning that more memory
        modules can be connected (and thus memory density is increased) and
        errors at the connection points are reduced.
       Each 240-pin DIMM provides a 64-bit data path (72-bit for ECC or
        registered or fully buffered modules).
       To use DDR2 memory, your system motherboard must have 240-pin DIMM
        slots and a DDR2-enabled chipset. A DDR2 SDRAM DIMM will not fit
        into a standard SDRAM DIMM socket or a DDR DIMM socket.
       To use fully buffered DIMMs, your server or motherboard must use
        FBDIMM architecture. An FBDIMM will not fit into a standard DDR2
        socket, and a DDR2 module will not fit into an FBDIMM socket.
       The number of black components on a 240-pin DIMM can vary, but it
        always has 120 pins on the front and 120 pins on the back, for a
        total of 240. 240-pin DIMMs are approximately 5.25 inches long and
        1.18 inches high, though the heights can vary. While 240-pin DDR2
        DIMMs, 184-pin DDR DIMMs, and 168-pin DIMMs are approximately the
        same size, 240-pin DIMMs and 184-pin DIMMs have only one notch
        within the row of pins. The notch in a 240-pin fully buffered DDR2
        DIMM is in a different location than the notch for regular 240-pin
        DDR2 modules.
 www.crucial.com