Experience expansion like you never dreamed possible. With 7 PCIe slots, up to 10 internal drive bays,* and 16 memory slots supporting up to 2TB of memory2 the HP Z840 can do it all. Maximize your time and increase your capabilities with built-in USB, SATA and SAS ports. Set a new performance curve and reduce boot up, calculation, and graphics response times and revolutionize how you handles large files with the HP Z Turbo Drive9. And thanks to Thunderbolt™ technology, you'll transfer data at lightning-fast speeds with the ability to connect to high-resolution displays and high-performance data devices over a single Thunderbolt™ cable. Ready to get going?