Acer Revo One (RL85) Desktop PC (Intel Celeron 2957U, 1.4GHz, 4GB RAM, 1000GB SSHD, Intel HD Graphics, Win 8.1 with Bing) white (Personal Computers)
In the description they say 2 extra hard disk up to 6TB, this is NOT true with this model and I think for all celeron model. Simply the second SATA controller is not present, so you can add only one extra hard disk up to 2TB and You Can not Make RAID