|I/O Slots||2 PCI Express Gen3 x16 slots
1 PCI Express Gen3 x16 slot - Available ONLY when 2nd CPU is installed.
1 PCI Express Gen3 x8 slot - with x16 connector. - Available ONLY when 2nd CPU is installed.
1 PCI Express Gen3 x4 slot - with x8 connector
1 PCI Express Gen2 x4 slot - with x8 connector
1 PCI 32bit/33MHz slot
1 Mechanical-only slot
|Front I/O||2 USB 3.0, 1 USB 2.0, 1 Headphone, 1 Microphone, and 1 IEEE 1394a|
|Rear I/O||1 IEEE 1394a 2 USB 3.0 4 USB 2.0 1 Serial PS/2 keyboard and mouse 2 RJ-45 to integrated Gigabit LAN 1 Audio Line-In, 1 Audio Line-Out, 1 Microphone|
|Internal USB||6 USB 2.0 ports available by three separate 2x5 headers. Each 2x5 header supports either one HP Internal USB Port Kit (EM165AA) or one 22-in-1 Media Card Reader.|
|Storage||500 GB HDD|
|CPU||E5-2643 3.3 GHz|
|Operating system||Windows 10|
|Graphics adapter||Not included|
HP Z820 Workstation B5P64UA E5-2643 128GB RAM 500GB HDD Win 10
HP Z820 Workstation, power cord, keyboard, mouse