Western Digital is expected to end shipments of parallel-ATA (PATA or legacy ATA) hard drives from December 29, 2013. The company maintained a small lineup of PATA hard drives in its product stack, to cater to people with older laptops looking for hard drive upgrades, and whoever else may be using the old standard that was blasted into obsolescence exactly a decade ago, with the introduction of SATA and AHCI. Product discontinuation notifications (PDNs) for the company's last Caviar PATA hard drives, bearing model numbers WD800AAJB (80 GB), WD1600AAJB (160 GB), WD2500AAJB (250 GB), WD3200AAJB (320 GB), WD4000AAJB (400 GB), and WD5000AAJB (500 GB) were issued this may, soliciting the last orders from OEMs and distributors. The last of those orders will be fulfilled by the 29th, when the drives will enter end-of-life (EOL) state. The company will only honor active warranties from then on.