Can you confirm (1) the original Lenovo AC adapter is included (2) that the external Wi-Fi antenna is in the box, and (3) that the Wi-Fi Bluetooth card is installed and functional?

The package contents listed are keyboard and mouse, and the product specifications show WLAN 802.11ac Wireless LAN and Bluetooth: Yes.

Questions & Answers: Refurbished: Lenovo ThinkCentre M920Q Tiny Form Factor Desktop Computer, Core i5-8500T up to 3.5GHz, 16GB DDR4, 256GB Solid State Drive

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Lenovo ThinkCentre M920Q Tiny Form Factor Desktop Computer, Core i5-8500T up to 3.5GHz, 16GB DDR4, 256GB Solid State Drive

Unleash Performance and Visuals Experience the ideal synergy of performance, efficiency, and affordability with the powerful Intel Core i5-8500T processor, coupled with the impressive Integrated Graphics
Memory and Storage With 16GB Memory DDR4, enjoy smooth multitasking and quick web browsing and the 256GB SSD provides fast loading and plenty of space for your family's important files
Maintain Critical Connections Ensure uninterrupted connectivity with Integrated 802.11ac Wi-Fi 5, which provides access to the cutting-edge 6GHz frequency band for ultra-fast wireless speeds. Supplemented by Bluetooth and versatile USB 3.1 Type-C & Type-A ports with a range of options to stay connected
easy to setup, plug-and-play, Runs multiple tasks smoothly, boots fast with no lag, and stays reliable. arrived in perfect condition and very well protected.Backed by responsive customer support that solves issues quickly.