1st aftermarket front wheel purchase - did I buy wrong one?
As a newbie to working on bikes, I decided to learn by doing by upgrading my department-store mountain bike to disc brakes, starting with the front wheel. Examining the bike, I saw that it had mounting holes on the fork for the disc brake caliper, and had 100mm front hub spacing. The stock front wheel, however, did not have a mount for a disk brake rotor.
I got a good deal on a disc brake kit and ordered a Mavic Crossland front wheel. Based on my research, I was expecting the wheel to have a CenterLock disc rotor mount. However, upon receiving the wheel, I don't see any rotor mount (see pictures). There is what might be a black plastic dust cover covering a rotor mount, but before prying things apart, I thought I'd humbly ask for help. Is that plastic disk a dust cover over a CenterLock rotor mount, or did I buy a wheel without a rotor mount?