Review on 🔌 Enhanced Connectivity: DriverGenius USB 3.1 Gen 1 Type A to 2.5G/1G Gigabit RJ45 LAN Ethernet Network Adapter - Ideal for Desktop PC and Laptop by Donald Larson

I connected this to the USB3.1 port on a Lenovo system using a high quality Cat6e cable used to connect to a QNAP 10g switch which is also connected to the PC with a network ASUS 10G cards and a Cat 8 cable. Switch ports are designed for 1, 2.5, 5 and 10 gigabits. The PC and my iMac (which uses a Thunderbolt 10G box) transfer data from their NVMe drives at full 10 Gigabit speeds, but when I try to transfer to/from a Lenovo using a 2.5G adapter, is it slower than 1G speed , and in Lenovo also has an NVMe drive, so this is not a bottleneck. .