How many PCIe slots does the QNAP TVS-h1288X have and what can they be used for?

The TVS-h1288X has two PCIe Gen 3 x4 slots for adding 10GbE or 25GbE networking, SAS controllers, or M.2 NVMe adapter cards. It’s the chassis to choose for a high-performance, expandable QNAP tower NAS with exceptional headroom.