SilverStone introduced the SD01 Hard Drive stackable "pad", with is an open "enclosure with just a pad to place the drive, an arm to hold it in place, and power/data connection to the host. The SD01 supports SATA and SAS, both with up to 6 Gb/s data-rate. It can hold 3.5-inch and 2.5-inch drives. Measuring 195 (L) x 121.5 (W) x 31.5 (H) mm, and weighing in at 180 g, the SD01 connects to the host over eSATA and SAS, but data-rate is subject to the host supporting it. In essence, the device is merely a dumb relay between the host and the drive, it's just that it has its own 12V DC power input, which it conditions to power the drive. The SilverStone SD01 is priced at €29.90.