Used but in good condition. Comes with Thunderbolt 4 cable. QNAP QNA-T310G1S Thunderbolt 3 to 10GbE Adaptor is a network/modem combo device with a single Ethernet (RJ-45) port, designed for high-speed network connectivity. Made by QNAP in Taiwan, this adaptor offers a maximum data rate of 10 Gbps, providing fast and efficient data transfer for computers and networking devices. With its Thunderbolt 3 interface, this adaptor allows users to easily expand their network capabilities and improve overall system performance. Ideal for professionals and power users seeking reliable and high-performance network connectivity.