ProGrade Digital Thunderbolt 3/4 Single-Slot Card Reader for CFexpress Type B. I purchased this new, but my PC wasn't compatible, so I've been storing it at home. Price reduced. Brand: ProGrade Digital Thunderbolt 3 card reader compatible with CFexpress Type-B and XQD cards. - Model: Thunderbolt 3 Single-Slot Card Reader - Compatibility: CFexpress Type-B and XQD cards - Data Transfer Speed: Full speed transfer - Included: USB cable, PC rear mounting plate 【Important】 Exclusively for Thunderbolt 3/4 compatible PCs. Cannot be used with USB 3.1/3.2 Type-C. Please refrain from price negotiations. Thank you for viewing.