USB 3.0 to Gigabit Ethernet Adapter NIC w/ USB Port - White Add a Gigabit Ethernet port and a USB 3.0 pass-through port to your laptop through a single USB 3.0 port. Conserve available USB 3.0 ports with USB pass-through. View larger Full Gigabit bandwidth support through a USB 3.0 host connection. View larger Integrated USB 3.0 Pass-Through Port The USB31000SPTW USB 3.0 to Gigabit Ethernet Adapter lets you add a Gigabit network port to your Macbook or Ultrabook computer through a USB 3.0 port, and features an integrated USB 3.0 pass-through port that keeps your USB port available for use with other peripherals. Each RJ45 port supports 10/100/1000 Mbps Ethernet and is fully compatible with IEEE 802.3i/u/ab standards. Full Gigabit Bandwith An ideal replacement LAN adapter or laptop accessory, this compact USB 3.0 NIC leverages the 5 Gbps speed of USB 3.0 to provide full gigabit bandwidth and also offers backward compatibility with USB 2.0 systems (speed limited by USB bus). Efficient & Full-Featured Network Adapter The adapter supports features such as IPv4/IPv6 packet Checksum Offload Engine (COE) and TCP large send offload to reduce the load on your CPU. Jumbo Frames, full-duplex operation with 802.3x flow control and VLAN tagging are also supported, making this an efficient and full-featured USB network adapter. Portable Convenience Take the adapter anywhere with a portable, USB-powered design. Gigabit Ethernet port through a USB 3.0 / 2.0 connection View larger Product Features and Applications Add Gigabit Ethernet capabilities to a desktop or laptopReplacement for a failed built-in Gigabit Ethernet port on a laptopIntegrated USB 3.0 pass-through portIEEE 802.3, 802.3u and 802.3ab (10BASE-T, 100BASE-TX, and 1000BASE-T) compatibleCrossover Detection & Auto-Correction (Auto MDIX)IEEE 802.1Q VLAN Tagging supportJumbo Frame supportSupports Checksum Offload (IPv4, IPv6, TCP, UDP) and Large Send OffloadCompact, lightweight design for maximum portability