A:Answer Hello! The motherboard which comes with this tower is the Rother, SSID 8653, the expansion slots are one M.2 socket 1, Key A, and M.2 socket, 3, Key M. For the discrete graphics card there is one PCIe x16 socket and One PCIe x1 socket. Please note that HP does not recommend upgrading either the operating system or the computer’s hardware as the components that were initially installed with the unit are certified by HP for optimal performance. Thank you for being an HP customer!
