CPU AMD R-Series RX-421ND quad-core 2.1 GHz processor, turbo core up to 3.4 GHz
Flash Memory 512MB (DOM)
Memory (RAM) 8GB UDIMM DDR4 (4GB x 2)
Number of RAM Slots (Max 64GB, UDIMM DDR4)
Note: For dual- or quad-DIMM configurations, you must use a pair of identical DDR4 modules
Max. number of HDDs/SSDs 8 x 2.5" or 3.5" SATA 6Gb/s HDDs/SSDs
2 x M.2 2280 SATA 6Gb/s SSDs

NOTE:
1. The M.2 SSD is not included as standard.
2. M.2 SSD operations can easily generate excessive heat. It is recommended to install a heatsink (from
QNAP or a third-party provider) on the M.2 SSD.
Hard Disk Tray 8 x Hot-swappable tray
Gigabit LAN Ports 4
10GbE Ports 2 x 10GbE SFP+ port via a preinstalled PCIe network card
PCIe Slot 1 x PCIe Gen 3 (x4), pre-installed with a dual-port 10GbE SFP+ LAN card
USB 2.0 4
USB 3.0 2
LED Indicators HDD 1-8, Status, LAN, USB, Power
Buttons Power/Status, Reset
Form Factor 2U Rackmount
Dimensions (HxWxD) mm 89 x 482 x 534 mm
3.5 x 18.98 x 21.02 inch
Weight (Net/ Gross) 11.30 kg (24.91 lbs.)
Temperature 0 ~ 40˚C (32˚F ~ 104˚F), wet bulb: 27˚C
Humidity 5 - 95% RH non-condensing
Power Supply Specification ATX 250W (x2), Input: 100V-240V ~ / 5A-2.5A, 50Hz-60Hz

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