Alternate color or configuration shown AddOn Networks MEM2821-256U1024D-AO memory module 1 GB 2 x 0.5 GB DDR 266 MHz ECC AddOn Networks MEM2821-256U1024D-AO. Internal memory: 1 GB, Memory layout (modules x size): 2 x 0.5 GB, Internal memory type: DDR, Memory clock speed: 266 MHz, Memory form factor: 184-pin DIMM, ECC Manufacturer: AddOn Networks SKU: 4148983 Manufacturer part number: MEM2821-256U1024D-AO GTIN: 0821455003497 MSRP: $646.00 Price: $436.96 Qty: Add to cart Custom wishlist OK Add to wishlist Add to compare list Email a friend Add-On Computer's entire line of memory modules allows you and your business to be more efficient. Our memory line includes the most reliable & high performing memory modules. Overview Specifications Contact Us Add-On Computer's entire line of memory modules allows you and your business to be more efficient. Our memory line includes the most reliable & high performing memory modules. Products specifications Attribute name Attribute value Packaging data Package type DIMM Features Internal memory 1 GB Internal memory type DDR Memory clock speed 266 MHz Memory form factor 184-pin DIMM ECC Yes Memory layout (modules x size) 2 x 0.5 GB Product tags (51242)