QNAP TS-664-8G 6-Bay desktop NAS, Intel® Celeron® N5105/N5095 quad-core, 8 GB onboard not expandable, 6 x 3.5’/2.5′ SATA 6Gb/s drive bays, 2 x M.2 2280 PCIe Gen 3 x1 slots, 2 x 2.5GbE, 1 x HDMI 2.0, 1 x PCIe Gen3 x2 slot, 2 x USB 3.2 Gen 2 Type 3yr WTY

SPEC
CPU Intel® Celeron® N5105/N5095 4-core/4-thread processor, burst up to 2.9 GHz
CPU Architecture 64-bit x86
Graphic Processors Intel® UHD Graphics
Floating Point Unit
Encryption Engine (AES-NI)
Hardware-accelerated Transcoding
System Memory 8 GB RAM
Maximum Memory 8 GB
Memory Slot 2 x SO-DIMM DDR4
Flash Memory 4GB (Dual boot OS protection)
Drive Bay 6 x 3.5-inch SATA 6Gb/s
The system is shipped without HDD.
For the HDD compatibility list, please visit https://www.qnap.com/compatibility/
Drive Compatibility 3.5-inch SATA hard disk drives / 2.5-inch SATA solid state drives
Hot-swappable
M.2 Slot 2 x M.2 2280 PCIe Gen 3 x1
Compatible with NVMe SSD PCIe Gen 3 and above. Please refer to https://www.qnap.com/compatibility/ for compatibility.
SSD Cache Acceleration Support
2.5 Gigabit Ethernet Port (2.5G/1G/100M) 2 (2.5G/1G/100M/10M)
5 Gigabit Ethernet Port (5G/2.5G/1G/100M) Optional via PCIe expansion card
10 Gigabit Ethernet Port Optional via PCIe expansion card
Wake on LAN (WOL)
Jumbo Frame
PCIe Slot 1
Slot 1: PCIe Gen 3 x2
Card dimensions for PCIe slot：190 x 68.9x 18.76 mm / 7.48 x 2.71 x 0.74 inches.
USB 2.0 port 2
USB 3.2 Gen 2 (10Gbps) Port 2 x Type-A
IR Sensor (Optional QNAP RM-IR004 remote control)
HDMI™ Output 1, HDMI™ 2.1 (up to 4096 x 2160 @ 60Hz)
Form Factor Tower
Standard Warranty 3

Optional Accessories :

BAQN-LIC-NAS-SWG