Internal to external connectivity changeover SATA cable is specifically designed to connect existing motherboards with SATA port to an external hard drive, enclosure or docking station with eSATA; Convenient alternative to using a USB port on your computer | Blazing fast SATA III speeds up to 6 Gbps are faster than USB 3.0 equipped drives and much faster than a USB 2.0 to HDD adapter; Upgrade to an eSATA enabled TB hard drive for direct file back-up instead of using a network; Provides secure connections for fast and reliable file transfers; Backwards compatible with SATA I, II, III hard drives | Fully shielded & flexible eSATA to SATA cable is engineered to reduce EMI noise interference; Latching SATA connector attaches securely for a trouble-free installation; Flexible cable jacket allows installation in tight computer cases; SATA and eSATA connectors are keyed differently to avoid connecting incorrectly | Cost-effective 2-pack provides spare or superior replacement SATA to ESATA cable cable to fix troublesome connection problems; Longer cable length allows location of an external hard drive in a convenient location; Low cost way to add eSATA when you have a free internal SATA port or to repurpose older SATA internal hard drives. | Compatible with Acomdata eSATA HDD Enclosure, Anker eSATA HDD Docking Station, Fantom External HDD, Fantom GreenDrive eSATA External HDD, Kanex Thunderbolt to eSATA Adapter, Mediasonic ProBox 4 Bay HDD Enclosure, Sabrent ESATA HDD Enclosure, StarTech PCI Express eSATA Controller, 4 Bay eSATA HDD Docking Station, TiVo Roamio HD Digital Video Recorder, Thermaltake BlacX eSATA Docking Station, Duet eSATA Dual HDD Docking Station, Vantec NexStar eSATA HDD Enclosure, WD My Book AV DVR Expander