What wireless connectivity does this PC support?

It supports Wi-Fi 6E (802.11ax Wireless LAN) and Bluetooth 5.2.

Does this gaming PC come with Windows 11 pre-installed, and is it ready to use right out of the box?

Yes. It includes Windows 11 Home pre-installed and activated, so it is ready to game on arrival.

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ABS Cyclone Aqua Prebuilt Gaming PC - Windows 11 - Intel Core i7-14700F - GeForce RTX 5060 Ti 16GB - DLSS 4 - 16GB DDR5 - 1TB NVMe SSD

GPU: MSI GeForce RTX 5060 Ti 16GB SHADOW 2X OC PLUS
CPU: Intel Core i7-14700F - 20-core (8P+12E) - strong framerates with headroom for streaming and content creation
RAM: G.SKILL Flare X5 16GB (1x16GB) DDR5-6000 - modern DDR5 bandwidth for smooth gaming
SSD: Patriot P410 1TB M.2 PCIe Gen 4 NVMe - fast storage with near-instant game load times
Motherboard: ASRock B760M-CX - B760 with multiple M.2 slots, built for the i7-14700F
Cooling & Case: Cooler Master Hyper 212 PRO ARGB CPU Air Cooler in the Cyclone mATX case - 650W 80 PLUS Gold PSU
Wireless: Wi-Fi 6E and Bluetooth 5.2 - tri-band wireless with 6GHz band, no cable needed
VR Ready and AI PC Ready for today's headsets and AI apps.
Windows 11 Home pre-installed and activated - ready to game on arrival.
Expert-built and stress-tested before it ships.
What You See Is What You Get - exact listed components ship. No substitutions.
Designed and assembled in California, backed by Newegg's 20+ years of expertise.
Covered by manufacturer warranty with dedicated support.