I broken on-board USB 3.0 header port.

When I assembled Mini-ITX Mother Board (ASRock Z370M-ITX/ac) into Mini PC Case (Fractal Design FD-CA-CORE-500-BK Fractal Design Core 500 Black), I pushed USB 3.0 connector (2 in 1) into on-board USB 3.0 header port with so much pressure that 2 or 3 male header pins near pin #1 were broken. It's my mistake.
I'm used to inserting 2.54mm pitch robust mil spec connectors hundreds of times. But, 2.0mm pitch thin and fragile connector pins on mother board was the first experience for me.
I tried to fix vended pins with tweezers, but these pins were simply broken away from the mother board. So, I used vacuum cleaner avoid to short circuit.
I think PC specs seems to be transition under yard-pound system to SI. I'm interested in north american people opinions. But I know the part of opinions already. It looks much minority.
White House: Use Metric If You Want, We Don't Care
Wann Ich ge-googelt, I found the following discussion. I wanted to vote 1 if I have a right to do it.
Does anyone else hate the USB 3.0 header port on motherboards?
Anyway I called seller's call center and the agency's call center. Both of them answered same opinion. "Unfortunately, It's your mistake. It's out of warranty." I agreed with it. Then, I disassembled all of the component of my new PC and I brought the broken mother board (I confirmed it can ran Ubuntu except a USB port) into the seller's repairing service counter.
I asked to the staff "How long does it take reveal if it can fix it in Japan (it means the agency cannot do anything, just exchange the entire mother board) or not (sending to Taiwan and soldering again or something) and how much?".
His answer was "Around 2-weeks. Sometimes, The problem is entire mother board for exchange is out of stock. it will be more expensive."
I thought that's too slow, so I ordered the following parts in advance.
20Pcs-2mm-2-0mm-Pitch-20-Pin-Straight-Male-Shrouded-Box-Header-IDC-Connector
Fortunately, Some orders from Japan to China (almost all Hong-Kong) is very quick and free of charge shipping cost. It will reach me faster than the result of the agency's check.
Unfortunately, China is too close to Japan, but it's the other political issue.
If it works well, I can enjoy destruction derby at least 20 times with low cost!