
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. .

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