“Fits inside a male USB-A connector, for example at one end of a male-male USB extension cable. Also tried it in a female USB-A and it worked but the connection was a little loose.”
“Very handy to have and connects up perfectly. One relatively minor problem is that it's quite stiff to get in and out of the full-size USB connector, with the relatively small mico connector as the only part to grip. Once installed where you need it though a minor inconvenience.”