Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X3502R found under Supplementary Kit Computer by Sun Microsystems Inc. The National Stock Number assigned to this part is 7025014081315, and the Federal Supply Class is 7025 Adp Input Output And Storage Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like X3502R.