Crucial 2GB DDR2 PC2-5300 Unbuffered NON-ECC 18V 256 Meg x 64240-pin DIMMApproximately 525 in by 118 in (13335 mm by 30 mm)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 & a socket on a larger printed circuit board The pins on the front & back of a DIMM are not connected to each other 240-pin DIMMs are used to provide DDR2 SDRAM memory for desktop computers DDR2 is a leading-edge generation of memory with an enhanced architecture that allows it to transmit data very fast Each 240-pin DIMM provides a 64-bit data path (72-bit for ECC or registered or Fully Buffered modules) (The Ballistix™ & Ballistix Tracer™ high-performance memory do not come in 72-bit or registered modules) Standard DDR2 240-pin DIMMs are available in DDR2 PC2-3200 SDRAM DDR2 PC2-4200 SDRAM DDR2 PC2-5300 SDRAM & PC2-6400 SDRAM To use DDR2 memory your system motherboard must have 240-pin DIMM slots & a DDR2-enabled chipset A DDR2 SDRAM DIMM will not fit into a standard SDRAM DIMM socket or a DDR DIMM socket The number of black components on a 240-pin DIMM can vary but it always has 120 pins on the front & 120 pins on the back for a total of 240 240-pin DIMMs are Approx. 525 inches long & 118 inches high though the heights can vary While 240-pin DDR2 DIMMs 184-pin DDR DIMMs & 168-pin DIMMs are Approx. the same size 240-pin DIMMs & 184-pin DIMMs have only one notch within the row of pins The notch in a 240-pin DDR2 DIMM is closer toward the center of the module Ballistix & Ballistix Tracer 240-pin DIMMs Our high-performance Ballistix 240-pin DIMMs come in DDR2 PC2-5300 SDRAM DDR2 PC2-6400 SDRAM & DDR2 PC2-8000 SDRAM The Ballistix Tracer illuminated activity-indicating high-performance 240-pin DIMM comes in SDRAM DDR2 PC2-6400 SDRAM & DDR2 PC2-8000 SDRAMECC NON-ECCForm Factor UDIMMModule Size 2GBKit Qty 1 Speed 667MHZTracer False Voltage 18VDIMM Type Unbuffered Bullet Features Increases system performance Warranty Limited Lifetime Specs DDR2 PC2-5300 • CL5 • Unbuffered • NON-ECC • DDR2-667 • 18V • 256 Meg x 64