SD4.0 & Micro SD 4.0 socket, SMT, UHS-II, 312MB/s from Rego Electronics Inc.
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SD Card Reader 4 in 1 Multi USB 3.0 Micro SD Memory Card Adapter for External Camera Photo SD SDXC SDHC TF MicroSD Micro SDXC Micro SDHC MS CF Compact Flash UHS-I
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UGREEN USB Type C Card Reader SD TF Micro SD 4.0 UHS II USB C 3.1 OTG Memory Card Reader Adapter for iPad Pro 2018/2020 MacBook|Card Readers| - AliExpress
UHS-II High Speed Card Reader, USB C SD 4.0 Memory Card Reader, for SDXC, SDHC, SD, MMC, Micro SDXC, Micro SD, Micro SDHC Card, UHS-II UHS-I Cards, Compatible with MacBook Pro, iPad
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stouchi C40 SD/CF Card Reader for USB C, Stouchi UHS-II SD4.0/ CF/Micro SD Card Reader Adapter 3 in 1 USB C OTG SD 4.0 Card Reader up to
Micro SD 4.0 card socket front and rear pin H=1.45mm_卡座連接器系列-惠兴力HULYN
USB 3.1 SD Card Reader, 3 in 1 UHS-II SD 4.0 Micro SD Card Reader Adapter with USB C 3.1 Micro USB 2.0 Connectors for Camera Laptop PC Pad Tablet OTG Android
Ben Heckendorn on Twitter: "Obtained a Teensy 4. Going to attempt soldering micro SD card onto the back using electric tape mask and some pin adjustments. I hear this thing is BEAST
microSD 4.0 adapter and microSD adapter the difference (www.memorypack.com.tw/px/px.html) - YouTube