Brand: BUFFALO Model: Link Station LS-QVL/1D Series Accessories: Power adapter Function: NAS (Network Attached Storage) ・Equipped with 4 HDDs 3 x 500GB, 1 x 1TB The 3 x 500GB drives are configured in RAID5 for approximately 1TB of usable space, set up as the "share" drive. The 1TB drive is set up as "share2". You can change the configuration to RAID0, RAID10, or RAID1 (two-drive configuration) using buffalo nas navigator2 (free download). HDD capacity can be increased by replacing the drives. Used item, no returns or exchanges accepted.