This expansion worked correctly, it fits where the CD/DVD module is. I slid out the CD and replaced with the USB 3.0 module. Then I checked the speed and its working better at faster speeds than my new desktop USB 3.0. So its a success as the CD/DVD is obsolete. The quality and appearance are also good. No issues at all. Very glad it works well.
While fast and convenient, forget using with thicker USB 3.0 drives. There's not enough space for thicker drives without using a USB 3.0 extension. Still great if you have a thin or micro flash drive