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. Transparent Type-C hard drive enclosure 2.5 inch profeional hard drive enclosure, brings amazing SuperSpeed experience. Everything is under control 2139C3 is made of transparent ASB fireproof material with blue LED indicator, being the beautiful ornament on your desktop. USB3.1 Gen2 Type-C to SATA3.0 10 Gbps transmiion USB3.1 Gen2 Type-C's theoretical transfer rate is up to 10 Gbps; SATA3.0's theoretical velocity reaches up to 10 Gbps, setting aside more time to do what else you want. Support UASP protocol New UASP protocol improves transfer speed, reduce the utilization of CPU, data delay and waiting time. Tool free installation, easy to use Renew your old hard drives Put old 2.5 inch hard drive into hard drive enclosure to be your mobile database, renewing old notebook hard drives. Widely compatible Multi-safety protection Mobile database, more convenient Two Version To Choose