Synology RackStation RS1619xs+. Synology RackStation RS3617xs+. Synology RackStation RS3621RPxs. Rank: 1Rx8 (Single Rank x8 based). ECC Type: ECC Unbuffered. Capacity: 4GB. Kit Capacity: 4GB. Your computer loads a program or file you select from the hard drive in to your computers RAM, then it will access each bit of data from there.
eBay