Lenovo Open Box ThinkCentre M90s Gen5 SFF vPro Core i5-14500 2.6GHz 16GB 512GB OPAL2 DVD+RW ax BT DP 2.5" bay W11P

16GB (2x8GB) 4400MHz DDR5 SDRAM, upgradeable to 128GB.

There are four UDIMM dual-channel capable slots. Two slots are occupied by removable 8GB modules; the other slots are open.

Video memory: shared system memory with integrated Intel UHD 770 graphics.

Genuine Windows 11 Pro is pre-installed.

Expansion slots:
(1) PCIe 4.0 x16 (x4 signal), low-profile (<155mm length, <70mm height)
(1) PCIe 4.0 x16, low-profile (<155mm length, <70mm height)
(1) PCIe 3.0 x1, low-profile (<155mm length, <70mm height)
(3) M.2 (1 for WLAN, 2 for SSDs)

Expansion bays:

(1) 3.5" drive bay
(2) 2.5" drive bays (1 bay is not installed by default; see product name to determine if the 2nd 2.5" bay is pre-installed)

I/O:
Front:

(1) USB 3.2 Gen2 Type-C (10Gbps, with 15W charging)
(2) USB 3.2 Gen1 Type-A (5Gbps)
(2) USB 3.2 Gen2 Type-A (10Gbps)
(2) 3.5mm audio (headphone/microphone combo, microphone)
Back:
(4) USB 3.2 Gen1 Type-A (5Gbps)
(1) HDMI 2.1 TMDS
(2) DisplayPort 1.4a (HBR2, DSC)
(1) RJ-45 LAN
(1) 3.5mm audio 

(1) Open configurable flex I/O port (empty by default; see product name to determine what, if any, optional I/O port is pre-installed)
(1) Power in

Additional installed port(s):
(1) DisplayPort 1.2

310W power supply, 92% efficient