Not very fast at all for the price. I built a portable 2TB NVMe drive with a similar sized enclosure for around $200. I didn't even bother spending the money on the 40Gbps enclosure because of heat issues. Even with my cheap 10Gbps $25 enclosure I get 900MBps... so I'm shocked they are boasting 460MBps. Not impressive at all. For the price I'd expect something north of 1500MBps or more.