Used X1 Carbon 6th Generation in fair condition. Please  check pictures.

Processor 8th Generation Intel Core i7 Processor i7-8650U 4 cores 8 threads 1.9GHz to 4.2GHz
Graphics Intel HD Graphics 620 or Intel UHD Graphics 620 in processor; supports external digital monitor via HDMI or USB Type-C; supports three independent displays; Max resolution: 5120x2880@60Hz (USB Type-C); 4096x2160@30Hz (HDMI)
Memory 16GB / 2133MHz LPDDR3 / soldered to systemboard, no sockets
Display • 14.0" (355mm) FHD (1920x1080), anti-glare, LED backlight, WVA, 300 nits, 16:9 aspect ratio, 700:1 contrast ratio, 72% gamut, 170° viewing angle
Storage 1TB M.2 SSD / PCIe NVMe, PCIe 3.0 x 4, 32Gb/s 
Ethernet Native Intel Ethernet Connection I219-LM (vPro) via optional ThinkPad Ethernet Extension Adapter Gen 2 (included)
WLAN + Bluetooth • Intel Dual Band Wireless-AC 8265, Wi-Fi 2x2 802.11ac + Bluetooth 4.1, M.2 card
Dimensions WxDxH: 12.74" x 8.55" x 0.63"; 323.5mm x 217.1mm x 15.95mm
Weight Starting at 2.49 lb / 1.13 kg
Case color Black
Media reader MicroSD card reader, supports UHS-II
Ports:
Two USB 3.1 Gen 1 (one Always On), two USB 3.1 Type-C Gen 2 / Thunderbolt 3
(with the function of Power Delivery and DisplayPort), HDMI 1.4b,
Ethernet extension connector, nano-SIM card slot (WWAN models),
headphone / microphone combo jack, microSD card reader,
side docking connector, security keyhole

Camera IR camera and HD720p camera, fixed focus
Audio support HD Audio, Realtek ALC3286 codec / stereo speakers, 1W x 2, Dolby Audio Premium / dual array microphone,

Keyboard 6-row, spill-resistant, multimedia Fn keys, LED backlight
UltraNav TrackPoint pointing device and buttonless glass surface multi-touch touchpad

Security chip Discrete TPM 2.0, TCG Certified (may be disabled in some region)
Fingerprint reader Touch style match on chip fingerprint reader on the palm rest, anti-spoofing technology

Battery Integrated Li-ion 57Wh battery, supports Rapid Charge (charge up to 80% in 1hr) with 65W AC adapter
AC adapter 65W USB-C AC adapter