Logilink ID0027 is a PCI Express card. It is used as a host adapter to connect an external SATA hard drive or device to a computer's motherboard. The card features two eSATA ports, providing up to 6 Gbps of data transfer speeds. It is backward compatible with SATA1, SATA2, and SATA3 drives, allowing it to be used with older hardware. Additionally, it supports Port Multiplier technology and has a port multiplier bracket which can be installed to increase the number of external devices that can be connected. The card is compatible with Windows, Mac and Linux operating systems.