PCI Express x16: 1 x PCIe 3.0 x1 slot
* Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/ 1037507/).
- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/ for the list of supported peripherals.
Specifications: Occupancy: 3 x 5.25" Drive Bays
Capacity: 4 x SATA 3.5" HDD or 4 x SATA 2.5" HDD or SAS HDD
Supports Hot-Swap: SATA I / II / III
Cooling Subsystem: 1 x 120mm Exhaust Fan
Material: Steel & ABS
Dimension: 5.87" x 5.02" x 8.27"
Weight: 2.65 lbs.