Lenovo ThinkCentre M900 Tower Desktop PC, Windows 11 Pro

Grade A refurbished Lenovo ThinkCentre M900 Tower Desktop PC — professionally refurbished, configured, and tested by TekRefurbs. Choose your processor, memory, and storage above. Every desktop ships with a power cord and USB Wi-Fi adapter.Key Features Brand: Lenovo Model: ThinkCentre M900 Tower Desktop PC Form Factor: Tower Processor: Intel Core i5-6500 or Intel Core i7-6700 Processor Speed: i5-6500: 3.20 GHz Base Frequency, 3.60 GHz Turbo Frequency Processor Speed: i7-6700: 3.40 GHz Base Frequency, 4.00 GHz Turbo Frequency 16GB or 32GB Memory Options 256GB SSD / 512GB SSD / 1TB SSD Storage Options Operating System: Windows 11 Pro Connectivity: USB Wi-Fi Dongle Included Power Cord: Included Optical Drive: None System Ports Front: 2 x USB 3.0, optional 2 x USB 2.0, 1 x microphone (3.5mm), 1 x headphone (3.5mm) Rear: 6 x USB 3.0, optional 2 x USB 2.0, 1 x serial (9-pin) plus optional 2nd serial, optional parallel (25-pin), 1 x Ethernet (RJ-45), 1 x VGA, 2 x DisplayPort, optional PS/2 (keyboard/mouse), 1 optional eSATA, audio line-in / line-out / mic-in (3.5mm) Other Specs Dimensions: 6.89 x 16.26 x 15.98 inch (WxDxH) Weight: 27.56 lb Chipset: Intel Q170 Memory: 4 x 288-pin DIMM slots (UDIMM), DDR4-2133, dual-channel capable, up to 64GB Internal Storage Layout: Bay 1 5.25-inch accessible (standard optical), Bay 2 5.25-inch accessible (optional media reader / front-access HDD), Bay 3 internal 3.5-inch 1-inch-high (standard disk), Bay 4 internal 3.5-inch 1-inch-high (optional 2nd disk); M.2 SSD (PCIe NVMe 3.0 x4) option; four onboard SATA 6.0Gb/s connectors (one usable as eSATA), RAID 0/1; optional 29-in-1 media reader