Alloy shell, efficient heat dissipation without heating - upgraded aluminum alloy material quickly dissipates heat and refuses to heat up. 40Gbps high-speed transmission - supports UASP TRIM S.M.A.R.T, with a theoretical transmission rate of about 40Gbps. Dual card design, worry-free card reading - dual CFexpress Type B card slots and Thunderbolt data cable are matched to achieve fast transmission, plug and play, no installation required, share beautiful things anytime, anywhere. Thunderbolt interface ultra-fast transmission - using Thunderbolt 3/Thunderbolt 4 Type-C interface, with Thunderbolt 4 data cable, to achieve ultra-high-speed transmission of photography/editing materials, 3D video 4K photos are output without reservation. 8K image quality lossless transmission - the memory card reader designed for photography, film, live broadcast and other post-editing users supports CFast2.0 technology, 3D video, 8K/4K photo lossless output, a luxurious visual feast.<br><br>High-priced main control "core" is powerful - using Intel JHL7440 main control chip, with strong stability and compatibility, While maintaining high performance, it effectively reduces the problem of hard drive heating! 4TB large capacity expansion allows you to store massive amounts of data as you wish - there is enough space, so you no longer have to worry about which one to delete to meet your daily work and entertainment storage needs. Colour:Silver & Gray Material:aluminum alloy<br><br>Package Contents: 1 * CFexpress TYPE-B Card reader<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.