There's a good photo here.  If it's one of these two ports that is damaged, this is what you need. [URL]  
Hello, Community; Wondering if anyone can give me a definitive answer on parts question. Dell Inspiron 15 7586 I/O Board 71FMC - will this fit my laptop? (found this on a parts supplier website)have not disassembled the unit yet, I can never make heads or tales out of the dell support "view original configuration" parts lists (what a nightmare those are). I have 7586 2-in-1 and it appears from the outside and service manual that the usb /card reader could be a separate board. My unit is Inspiron 7586 2-in-1I would rather know for sure that the part will work before I buy it and attempt the replacement. Thanks anyone for any assistance!
Inspiron 7586 2-in-1 USB Broken - i/o board