Compatible with the Dell 1558 notebook, the Dell 4DKNR laptop motherboard offers a FireWire port for high-speed data transfer between compatible electronics, and a variety of other interfaces for expanded functionality. These include a single USB interface and an eSATA port. The eSATA interface on the Dell motherboard allows users to connect an external SATA-based unit such as a hard drive for a significant increase in storage beyond any installed internal drives. The USB port built into the Dell motherboard also allows for external storage units, in addition to serving as a widely available interface for devices such as cameras, smartphones, and much more. The Dell 4DKNR laptop motherboard possesses both a VGA port and an HDMI port to give it access to a range of different external display options, including standard-definition and high-definition units. An integrated LAN port is also located on this Dell motherboard to handle Internet and network access.