Lenovo ThinkCentre M90a Pro Gen 4 Operating system: Windows® 11 Pro/English Processor: Intel® Core™ i5-13500, 14C (6P + 8E)/20T, P-core 2.5/4.8 GHz, E-core 1.8/3.5 GHz, 24 MB Memory: 1x16GB SO-DIMM DDR5-4800 Number of slots: 2 DDR5 SO-DIMM slots with dual channel support Maximum memory size: 64GB DDR5-4800 Hard disk: 512GB SSD M.2 2280 PCIe® 4.0 x 4 NVMe® Opal 2.0 Position for internal drive: 1x 2.5" HDD (up to 1TB), 2x M.2 SSD (up to 1TB each) Optical drive: DVD±RW Memory card reader: 3 in 1 Display: 27" QHD (2560x1440) IPS anti-glare 350 nits, 99% sRGB, non-touch Graphics card: integrated Intel® UHD Graphics 770 Audio: HD, Realtek® ALC256-NL codec; stereo speakers 5Wx2, ; dual microphone Webcam: built-in, 5MP Keyboard: USB keyboard, black/Slovak Mouse: Calliope USB mouse, black Wall mounting: VESA mount Network: integrated 100/1000M Wireless communication: WLAN + Bluetooth (Intel® Wi-Fi® 6E AX211, 802.11ax 2x2 + BT5.3, vPro®) Security: security chip: discrete TPM 2.0, TCG certification lock: Kensington® security slot, 3 x 7 mm Power supply: 230 W 92% adapter Side Ports: 1x Thunderbolt™ 4/USB4® 40 Gbps (data transfer support, 15W charging and DisplayPort™ 1.4) 2x USB 3.2 Gen 2 1x combined headphone/microphone jack (3.5mm) Rear ports: 1x USB-C® 3.2 Gen 2 (data transfer support, 15W charging) 3x USB 3.2 Gen 1 1x HDMI® (combined HDMI 1.4 port/HDMI 2.1 TMDS output) 1x DisplayPort™ 1.4 1x RJ-45 (LAN) 1x power connector Expansion slots: three M.2 slots (one for WLAN, two for SSD) Color: black Dimensions (WxDxH): lowest in portrait mode: 613.6 x 219.81 x 411.04 mm tallest in portrait mode: 613.6 x 219.81 x 521.81 mm Weight: 11.2 kg Link to the manufacturer page: https://psref.lenovo.com/Detail/2348?M=12JM001FCK