Lenovo ThinkPad E15 Gen 4 Notebook PC (21E6001HZA) - 12th Generation Intel Core i7-1255U Processor, 16GB DDR4 3200MHz RAM (1 x 8GB Soldered RAM + 1 x 8GB SO-DIMM Removable RAM, 40GB Max), 512GB M.2 PCIe NVMe Solid State Drive, 15.6-inch Full HD IPS 300nits Anti-Glare Display (1920 x 1080), No Optical Drive, Integrated Intel Iris Xe Graphics, 1080p Webcam, 2 x Array Microphone, 2 x 2W HD Stereo Speakers, Connectivity: 1 x USB 2.0, 1 x USB 3.2 Gen 1 (Always On), 1 x Thunderbolt 4 / USB 4 40Gbps (support data transfer, Power Delivery 3.0, and DisplayPort 1.4), 1 x HDMI, up to 4K/60Hz, 1 x Ethernet (RJ-45), 1 x Headphone / microphone combo jack (3.5mm), Windows 11 Pro 64-Bit