Dear Customer Suppose you bought 2139C3-G2, however, it says 2139C3 on the box. Dont worry, the product you received is right The reason is Although 2139C3 and 2139C3-G2 are different products, their shells are the same. Therefore, whether it is 2139C3 or 2139C3-G2, the silk screen on the product is 2139C3. Product Code :ORICO 2129U3 Material:PC + Aluminum Alloy Color:Transparent Output Interface:USB3.0 Micro B Input Interface:SATA Revison 3.0 Transmiion Speed:5Gbps 6Gbps under ideal conditions. Power Supply:USB Port Power Supply Supported System:Windows/Mac/Linux Product Code :ORICO 2139U3/2139C3/2139C3-G2 Material :PC Color:Transparent Output Interface:USB3.0 Micro B/USB3.0 Type-C/USB3.1 Gen2 Type-C Input Interface:SATA Revison 3.0 Transmiion Speed:5Gbps/6Gbps/10Gbps Power Supply:USB Port Power Supply Supported System:Windows/Mac/Linux ORICO Hard Drive Case Model 25PW1-U3-BK 2521U3-V1-BK 2020C3-V1-BK M25C3-GR 2520U3-BK Photo Compatibility 2.5'' HDD & SSD 2.5'' HDD & SSD 2.5'' HDD & SSD 2.5'' HDD & SSD 2.5'' HDD & SSD Transfer Speed 5Gbp 5Gbp 6Gbps 6Gbps 5Gbp USB Interface USB 3.0 Micro-B USB 3.0 Micro-B USB 3.1 Type-C USB 3.1 Type-C USB 3.0 Micro-B Capacity Support 6TB 6TB 6TB 6TB 4TB UASP Included Cable Micro-B to USB-A Micro-B to USB-A Type-C to USB-A Type-C to USB-A Micro-B to USB-A Material Plastic Plastic Plastic Plastics / Plastics+Metal Plastic Colors Black/ White/ Blue/ Pink Black/ White Black/ White Green/ Gray/ Black Black/ White