I see the one star review here and his experience isn't mine. So far this card has worked AMAZING in an old workstation PC I had lying around. I am using it to give myself 2.5g networking via USB and have 5 ports going to hard drive enclosures (another 2 to esata, shout out to mediasonic and ebay) and this card RIPS. Not only do I get full speed from the 2.5g networking card, but this storage spaces speed has dramatically improved from my old machine. Where I had a lot of the drives plugged into a USB 3.0 pcie x1 card.To put it in perspective I went from SD card speeds (around 60mb) on my 21(one is a 4 drive hard raid) to actual HDD read speeds around 140-160.I am very pleased with this card, it's performance; and its ease of use to install.I had ONE hiccup with the Power, as my computer didn't have a 6 Pin. But had SATA (modular dell power supply) a simple Amazon purchase fixed that!Would recommend this card to someone who is looking to access LOTS of drives or USB peripherals at rapid speeds.Pound for pound you get more bang for your buck than a thunderbolt 4 adapter. On my MSI PC I have their pcie thunderbolt card. It is only 4 lane and 40gb. While this isn't the thunderbolt tech, you are still have a 160gb overhead. HOWEVER. Pcie 3x16 is max speed of 16GB/sIt's a shame they don't make a thunderbolt card like this.EditHave had this card almost a year. Will say it's working fine.CONSNO ONE makes 20GBS USB peripherals. There are a few NVME enclosures out there but I can't even find a hub to split one 20 port into two 10s.HighPoint DOES make a 10gbs card, however just for future compatibility id still get this one again