HP A9887-69001 - 4GB DDR266 ECC Memory Module - High density, 30.5mm (1.2in) form factor, 2 x 2048MB Retail
HP A9885-62002 - 1GB DDR266 ECC memory module - 30.5mm (1.2in) form factor, 2 x 512MB, high density Retail
HP A9886-69001 - 2GB DDR266 ECC Memory Module - High density, 30.5mm (1.2in) form factor, 2 x 1024MB Retail