Alternate color or configuration shown Synology D4ES01-4G memory module 4 GB 1 x 4 GB DDR4 ECC Synology D4ES01-4G. Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR4, ECC Manufacturer: Synology SKU: 5995410 Manufacturer part number: D4ES01-4G GTIN: 4711174724031 Price: $190.59 Qty: Add to cart Custom wishlist OK Add to wishlist Add to compare list Email a friend Specifications Contact Us Products specifications Attribute name Attribute value Harmonized System (HS) code 84733020 Features Compatible products DS1621+ Internal memory 4 GB Internal memory type DDR4 ECC Y Buffered memory type Unregistered (unbuffered) Memory layout (modules x size) 1 x 4 GB Products specifications Attribute name Attribute value Harmonized System (HS) code 84733020 Features Compatible products DS1621+ Internal memory 4 GB Internal memory type DDR4 ECC Y Buffered memory type Unregistered (unbuffered) Memory layout (modules x size) 1 x 4 GB Product tags (51242)