This product is either discontinued or we cannot get that from suppliers.
Startech TB2USB3GE Thunderbolt To Gigabit Ethernet Plus, RJ45 (Gigabit Ethernet) USB 3.0, Network 10/100/1000 Mbps, Connector 1 - Thunderbolt™ (20-pin) Male, 1 - RJ-45 Female, 1 - USB Type-A (9 pin) USB 3.0 (5 Gbps) Female, Silver, Plastic, Included Thunderbolt Adapter, Instruction Manual.
The TB2USB3GE Thunderbolt™ to Gigabit Ethernet + USB 3.0 Adapter lets you expand your MacBook or laptop connectivity through a single, compact adapter with both Gigabit Ethernet and USB 3.0.