Tyan Thunder HX FT77DB7109 Barebone System - 4U Rack-mountable - Intel C621 Chipset - Socket P LGA-3647 - 2 x Processor Support - 3 TB DDR4 SDRAM DDR4-2666/PC4-21300 Maximum RAM Support - Serial ATA/600, 12Gb/s SAS RAID Supported Controller - ASPEED AST2500 32 MB Integrated - 14 x Total Bays - 14 2.5" Bay(s) - 10 x Total Expansion Slots - Processor Support (Xeon Platinum, Xeon Gold, Xeon Silver, Xeon Bronze) - 10 Gigabit Ethernet - 2 USB 3.0 Port(s) - 3 x 3200 W: