ASUS RS520A-E12-RS24U Main Picture

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The ASUS RS520A-E12-RS24U is a 2U rackmount storage server built to accommodate up to twenty-four 2.5-inch NVMe drives. It utilizes an AMD EPYC 9004 Series processor, which supports a massive number of PCI-Express Gen 5 lanes as well as 12 DDR5 channels - ensuring plenty of memory and I/O bandwidth for managing software-defined storage arrays.

In addition to the 24 front-accessible hot-swap bays, there are two M.2 slots for hosting the operating system and software as well as a pair of SATA connections for cache drives.

External connectivity consists of VGA output, four USB ports (2 each in front and back), two Gb LAN ports, and another LAN for remote management. There is an OCP 3.0 slot for installing a faster network adapter, though, as well a PCI-Express x8 low-profile slot for an expansion card.

Note: Compatible with Asus 1.5U Type Slide rail kit: 90SKR000-M07AN0

Model: Asus RS520A-E12-RS24U


Socket SP5
CPU Compatibility AMD EPYC 9004 Series
Form Factor 2U
Chipset Manufacturer AMD
Network Connectivity Onboard Dual Gigabit Ethernet (RJ45)
Network Controller Intel I350-AM2
Cooling System Heatsink and Fan
Number of Fans 8
Color Black
Memory Support
Type DDR5 ECC Registered
Maximum Speed 4800 MHz
Number of Slots 12
Maximum Size per Slot 256 GB
Maximum Amount Supported 3072 GB
Onboard Video
Chipset Manufacturer ASpeed
External Connections
USB 3.2 Gen 1 (USB 3.0) 4
LAN (RJ45) 2
Mgmt LAN (RJ45) 1
Internal Connections
SATA III 6.0Gbps 2
M.2 Connector 2
U.2 Connector 24
Compatible TPM Asus TPM-SPI
Notes: 24 x 2.5inch Hot-swap Storage Bays
Expansion Slots
Slot 1 PCI Express 5.0 x16
Slot 2 PCI Express 5.0 x8 in a x16 size
Slot 3 PCI Express 5.0 x16
Slot 4 PCI Express 5.0 x8 in a x16 size
Slot 5 PCI Express 5.0 x16
Slot 6 OCP 3.0
Additional Information
SLI Compatible No
Crossfire Compatible No
Built-in Webcam No
Built-in Microphone No
Bluetooth No
Integrated IO Shield Yes
Remote Management Onboard
Includes Rail Kit No
BIOS Features
EZ Flash No
OC Profiles No
Height 88.1 mm (3.5 in)
Width 449 mm (17.7 in)
Depth 840 mm (33.1 in)
Net Weight 17.95 kg (39.6 lbs)
Power Supply
Input Voltage 100-240 Vac
Wattage at 120V 1600 W
Redundancy 1+1