I found one but I do not really understand what is needed can you look at this one?https://www.techtoolsupply.com/ProductDetails.asp?ProductCode=NCO-UA66Q&source=googleps&gclid=CjwKCAjwvZv0BRA8EiwAD9T2VUO1TaS5F3_bwxPcDqF-BgF9YK7TNRPhzT3ambWyfJy1nhF2Suom2hoCZzwQAvD_BwEI can't help much, but I share your frustration. I searched several on-line sellers' websites for "powered USB Hub", and got huge lists of ALL USB hubs (mostly USB3 with added charging ports) and most NOT with a power supply unit!
Even those that have power "bricks" generally cheap out with low-rated power supplies. Just a note on checking that last detail. A USB2 standard port must be able to supply 0.5 A max at 5 VDC to each port. For USB3, that is raised to 0.9 A max per port. What makes this tricky at first is that many come with power supply modules outputting 12 VDC and some amperage (or wattage) max rating. Apparently the hub does the voltage conversion. So if your USB3 hub with NO charging ports is to meet specs, it should come with a power supply able to provide 5 VDC at 0.9 A PER PORT - that is, 4.5 W per port. Add a bit for voltage conversion loss, and I call that 5 W per port. So with NO extra charging ports, the power supply included should provide at least 20 W for a 4-port Hub (1.7A at 12 VDC), or 30 W for a 6-port unit (2.5 A at 12 VDC). If it claims to have high-output charging ports, the extra current for those ports must increase the requirements for the power supply module accordingly.
Finding USB2 hubs is getting harder these days as the market changes. Although you do not need it, OP, a USB3 hub will do the job also. It WILL plug into a standard USB2 port and work, although only at the older slower USB3 data transfer rate. Eventually you may find the USB3 level useful in newer equipment.
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