Add-On Computer Peripherals (ACP) has been the exclusive supplier to Ingram Micro"s Memory Upgrades program since 1999. All ACP memory is built to JEDEC Standards, to meet or exceed the Tier 1 OEM"s factory requirements. All our memory comes with a Lifetime warranty, and is 100% guaranteed compatible for the systems it is intended for. (Actual part shipped: AA1333D3N9/2G).2CT9321. 9321. Addon - Memory Upgrades Addon - Memory Upgrades AddOncomputer dot com 2GB DDR3-1333MHZ 240-Pin DIMM F/Lenovo Desktop.