Athena Power RM-3UC338 Space-Saving 3U Rack-mount IPC Server Chassis is a standard 19-in. rack specifications server chassis in 3U height with the space-saving design. It is with the following main features:

• Space-saving Design: 15" Depth (Chassis dimension: D15" x W17-1/8" x H5-3/16").

• Motherboard Compatibility: This chassis is designed to be compatible with a motherboard form factor from standard Mini-ITX (6.7" x 6.7"), MicroATX (9.6" x 9.6") up to ATX (12" x 9.6"). Also this chassis features 4 full-height vertical PCI-E expansion slots.

• Drive Bay Expansion Configuration:
  • 3 x External 5.25" drive bay with a Mini-ITX or MicroATX mobo; or 2 x External 5.25" drive bay w/ an ATX mobo. 
  • Up to 3 x Internal 3.5" drive bay (2 @ front; 1 @ rear); or up to 5 x Internal 2.5" drive bay (4 @ front; 1 @ rear).

• Power Supply Form Factor Compatibility: This chassis is designed to be compaitble with a PS3 (Short PS2) form factor single power supply unit. Athena Power Micro PS3 single power supply product line is the top-of-the-line IPC power supply in the USA market.  All Athena Power power supply unit features safety certifications and meets 80Plus efficiency specifications. 

• Thermal Solutions: This chassis features Two front 80mm ball bearing fans with plenty of Hexagon ventilation holes for providing high performance thermal solution. In addition, this chassis features a washable and removable mesh filter to reduce dust accumulation; it also can install 2 extra 60mm cooling fans at chassis rear to optimize thermal solution.

• Front Panel Features: This chassis front control panel features a 2-Port USB2.0 (Athena Power has an optional-part to upgrade it to a 2-Port USB3.0), LED indicators (HDD & POWER) and 2 momentary switches (POWER & RESET).