We sell original brand new HP memory and hard drive. HP memory has life-long limited warranty and HDD has 3 years' warranty. 

HP memory         
DY652A          1GB DDR2 PC2-4200 ECC 240P 
DY653A          256MB DDR2 PC2-4200 ECC 240P 
DY654A          512MB DDR2 PC2-4200 ECC 240P 
PR661A          256MB DDR2 PC2-3200 240P 
PR662A          512MB DDR2 PC2-3200 240P 
PR663A          1GB DDR2 PC2-3200 240P 
187418-B21        512 REG PC1600 2X256 ALL 
187419-B21        1GB REG PC1600 2X512 ALL 
187419-B21        1GB MEMORY (2X512MB) DDR 200MHZ 
187420-B21        2GB (2X1GB) PC1600 SDRAM KIT ML530 G2 ML570 G2 
187421-B21        4GB REG PC1600 2X2GB ALL 
201693-B21        512MB (2X256MB) PROLIANT DL360 G2 PC133 KIT ECC DIMM 
201694-B21        2 x 256MB PC133 SDRAM 
201695-B21        2GB SDRAM DIMM 133MHz 
202170-B21        1GB REG PC1600 4X256 ALL 
202171-B21        2GB REG PC1600 4X512 ALL 
202172-B21        4GB REG PC1600 4X1GB ALL 
202173-B21        8GB REG PC1600 4X2GB ALL 
236852-B21        256 REG PC133 SGLDMM ALL 
236853-B21        512 REG PC133 SGLDMM ALL 
236854-B21        1GB REG PC133 SGLDMM ALL 
287496-B21        512 REG PC2100 SGLDMM ALL 
287497-B21        1GB REG PC2100 SGLDMM ALL 
300678-B21        512 REG PC2100 2X256 ALL 
300679-B21        1GB REG PC2100 2X512 ALL 
300680-B21        2GB REG PC2100 2X1GB ALL 
300682-B21        4GB (2X2GB) DL360 DL380 ML370 G3 DL560 DL585 
301044-B21        2GB PC2100 DDR RAM 
326668-041        512MB 400Mhz PC3200 CL3 Non-ECC DDR SDRAM Dimm 
343055-B21        1GB REG PC2-3200 2x512 ALL 
343056-B21        2GB REG PC2-3200 2x1GB ALL 
343057-B21        4GB REG PC2-3200 2x2GB 1RANK ALL 
351108-B21        512MB REG PC2100 DL140 ALL 
351109-B21        1GB REG PC2100 DL140 ALL 
354557-B21        256MB UNREG PC3200 1X256 Memory ALL 
354560-B21        512MB UNREG PC3200 1X512 Memory ALL 
354563-B21        1GB UNREG PC3200 1X1GB Memory ALL 
358346-B21        256MB PC2700 SingleDMM 350G4/360G4 
358347-B21        512MB REG PC2700 SGLDMM ALL 
358348-B21        1G REG PC2700 SGLDMM ALL 
358349-B21        2G REG PC2700 SGLDMM ALL 
359821-051        512MB PC2-4200 DDR2 533 CL4 ECC 
361037-B21        1GB REG PC2700 2x512 ALL 
361038-B21        2GB REG PC2700 2x1GB ALL 
361039-B21        4GB REG PC2700 2x2GB  ALL 
371047-B21        1GB REG PC2700 2X512 ALL 
371048-B21        2GB REG PC2700 2x1GB ALL 
371049-B21        4GB REG PC2700 2x2GB ALL 
375004-B21        4GB REG PC2-3200 2X2GB 2RANK ALL 
376638-B21        1GB