HP's datasheet says "Memory card device: 1 smart card reader (select models); 1 SD card reader (optional); Nano SIM card slot (optional)". MicroSD is not mentioned. (Maybe the author is mistaking the Nano SIM slot for a MicroSD slot?) (For purchasers who use MicroSD cards, a MicroSDCard to SDCard adapter might be a useful add-on.)
The ZBook Power 15 series has grown up to a more modern 16-inch form factor. The larger and heavier size, however, has unfortunately not translated to faster graphics performance.