Monoprice 108790 3-Feet SATA External Shielded Cable, eSATA to eSATA Type I to Type I, Red External SATA (eSATA) cables are designed to connect external SATA devices to either external SATA ports or internal SATA connectors Unlike cables for internal applications eSATA cabling must be shielded The eSATA connectors are keyed differently to prevent the use of internal SATA cables in external applications