ryanhyh4789I've had five MF-87s and all of them have had this problem. I ordered three through Amazon and finally on the third one I asked iKBC to send me a new USB port module and replaced it myself, rather than hassle with yet another return. I ordered the last two from Blinq (Massdrop's closeout sales) and in addition to the cracked USB module they also have issues with shorting LEDs and switches. These MD version don't have the insulating layer between the case and PCB, unlike the current production versions sold by iKBC on Amazon that do have the insulation. These boards work fine when the case is opened up and an insulating layer is inserted properly. I've emailed iKBC again asking for replacement USB modules and the insulating layer so I can retrofit these boards. It really is in their best interest to provide the parts since they clearly have several design/production flaws with these.