Nikon D850 Review: The best SLR Nikon's made. Ever.
Dual memory card slots - XQD / CFexpress slot and a SD / SDHC/ SDXC slot. SD slot is UHS-II compliant. (CFexpress support was added with firmware version 1.20.).
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UANTIN SD Card Reader USB C, High-Speed Dual Slot Memory Card Reader, USB 3.0 to Micro SD Card Adapter for SD/MicroSD/SDHC/SDXC/MMC, Compatible with iPhone 16, MacBook Pro/Air, iPad Pro, Galaxy - Grey.
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Besides, you should find a sd card slot which is special for GPS maps sd card at the front panel of your unit.