P9D-E/4L is the flagship model of ASUS latest UP Denlow serverboards. The board is perfectly designed with powerful I/O expandability & digital power solution increasing VR power efficiency up to 94%. The versatile & highly reliable P9D-E/4L is ideal for data center front-end, firewall, gateway, storage, SMB print/ file/ mail/ exchange server, & more. Processor / System Bus 1 x Socket LGA1150 Intel Xeon processor E3-1200 v 3 product family 4th Gen Intel Core i 3 processors Intel Pentium processors Intel Celeron processors * Refer to asus for CPU Support list Core Logic Intel C224 Chipset Memory Total Slots: 4 (2-channel) Capacity: Maximum up to 32GB UDIMM Memory Type: DDR3 1600/1333 UDIMM with ECC Memory Size: 8GB, 4GB, 2GB Expansion Slots Total Slot: 7 Slot Location 1: PCI 32bit/33 M Hz Slot Location 2: PCI 32bit/33 M Hz Slot Location 3: PCI-E x 1 (Gen 2 X1 Link) Slot Location 4: PCI-E x 8 (Gen 3 X8 Link) Slot Location 5: PCI-E x 8 (Gen 3 X8 Link) Slot Location 6: PCI-E x 16 (Gen 3 X16 Link), Auto switch to x 8 link if slot 5 is occupied Slot Location 7: PCI-E x 1 (Gen 2 X1 Link), MIO supported Additional Slot 1: PIKE Slot for Stroage expansion *1 Follow SSI Location Form Factor ATX (12"x 9.6") ASUS Features FAN speed control Rack Ready (Rack & Pedestal dual use) ASWM Enterprise Storage SATA Controller: Intel C224 4 x SATA3 6 Gb/s ports 2 x SATA2 3 Gb/s ports Intel Rapid Storage Technology Enterprise (RSTe) (For Windows Only) (Support Software RAID 0, 1, 5, 10 ) LSI Mega RAID (For Linux/ Windows) (Support Software RAID 0, 1, 10) Networking 4 x Intel I210AT + 1 x Mgmt LAN Graphics Aspeed AST2300 with 32MB VRAM On Board I/O 1 x TPM header 1 x PSU Power Connector (24-pin ATX power connector + 8-pin ATX 12V power connector) 1 x Management Connector, Onboard header for management card 1 x USB (Universal Serial Bus) 3.0 pin header, Up to 2 Devices 1 x USB (Universal Serial Bus) 2.0 pin header, Up to 2 Devices 1 x Internal A Type USB (Universal Serial Bus) Port*2 5 x Fan Header, 4pin 1 x SMBus 1 x Chassis Intruder 4 x Front LAN LED 2 x Serial Port Header 1 x SATA DOM Power connector*3 1 x VGA Header Back I/O Ports 4 x External USB (Universal Serial Bus) Port (2 x USB (Universal Serial Bus) 3.0, 2 x USB (Universal Serial Bus) 2.0) 1 x VGA Port 4 x RJ-45 + 1 x Mgmt LAN 1 x PS/2 KB/ Mouse