1 to 3 x PCI Express x1 (depending on the specific sub-model/rev). SATA interface for HDD/SSD connectivity. Standard configuration includes up to 4 SATA ports. www.computerstoreberlin.de Rear I/O and Connectivity Video Output : VGA (D-Sub) and DVI ports. : Typically 2 x USB 3.0 and 4 x USB 2.0 (rear). Networking : Realtek RTL8151GH-CG Gigabit Ethernet (RJ-45). : Integrated High Definition Audio (Realtek ALC221/ALC887). Legacy Ports : PS/2 keyboard/mouse ports and a Serial (COM) port. www.computerstoreberlin.de Front Panel Pinouts (Ver 1.2)