[1] I have used large hard drives for many years. Companies start to strong (LaCie, G-technology — not SanDisk, they were always garbage). But then good companies go bad. For the time being, OWC is great. Fast, reliable, well-designed. And — GREAT! — they have outstanding customer service. When I had a problem connecting the drives through a hub, OWC support solved the problem. Afterward, they reached out to me to follow up. NO other company has done that in recent years (with the exception of one small European software maker).

[AC Input] Needed to add more Thunderbolt ports to my Windows 11 laptop. Installation was very easy, just plug and play. Three Thunderbolt 4 C ports and one USB 3.2 gen 2 A port does it all. Very happy computer, the hub helps the laptop to work the way I want.

[20 VDC / 7.5 A] This is a great product - HOWEVER, it is PCIe 3.0, not 4.0. Therefore the speeds are really more in line with the 770 Mbps (I haven't tested this). I installed my Samsung 980 Pro NVMe drive and Samsung Magician verifies that this is only PCIe 3.0 x1. It's unfortunately, but the listing was incorrect. However, the Thunderbolt connectivity works well and it is a well constructed piece of hardware. For me, at this time, I was hoping for the higher speed transfer on the NVMe drive which is limited by this version of PCIe implementation. Love B&H and OWC but this item I am returning at this time. BTW - OWC tech support is fantastic. Highly recommend their products; for my immediate needs, Looking for a faster solution. I'm sure B&H will correct the listing error soon. PCIe 4.0 NVMe drive works fine, but operates at the slower speeds.

[AC Input] I purchased to expand connections to Mac Mini M1, to connect a couple external drives (one was Thunderbolt 1), and to have another USB-A available, since the two jacks on the Mini were used for the Magic Keyboard and Magic Trackpad. It's been running nearly constantly since early 2021 (this Mac Mini remains powered up all the time).
While it's true that if you bump up against the Thunderbolt input cable, it can disconnect, I have not had that issue happen much at all since connecting it. However I have it in a fixed position on desktop (so it's rare to be sufficiently bumped).
I've not run this with an 'speed' tests, since I only have disk drives connected.
If I were to subtract a half star, it would be that I wished it had another USB-A port. But I knew the port specs before purchase.

[AC Input] We bought four of these to expand our storage for video. If you run a Mac, you will need to reformat these (at least I did). OWC support was quick, professional and easy to use.

They are substantially faster than our Lacie Big Docks and have allowed me to put buying the dreaded RAID/DAS/NAS for a while longer.

[1] A neat (optional) feature is the ClingOn Guard to secure cables to Thunderbolt ports utilizing an adhesive OR included Mounting Screws, which insert and thread into the small hole above each Thunderbolt port.
However, on my OWC Thunderbolt Hub, the cable Guard mounting screw fails to engage any threads as it is inserted into the hole above the front-facing TB port.
Unfortunately, I only noticed this after the 30-day return window had closed. Apologies in advance if I failed to notice another option to have this corrected.

[1.085 lb] Good!!!!!!!!!!!!

[1] Over the years I have had a number of hubs that did not live up to the claims in their advertising/description this one does.

[1.085 lb] I am very happy with this hub. The box it came in was surprisingly heavy, with most of the weight being the power supply. I am using this with my new MBP M3Max and the speeds are fantastic.

[AC Input] So these are an absolute must for me. I use many thunderbolt devices so my MacStudio has not got enough ports. I have two of these running all days for different things. And two spare units for different portable setups. Good speed and functionality. Probably the best computer accessory I have.