Transcend ESD310C 512GB Portable External SSD USB-C - USB-A - Read up to 1050MB/s. . . . . ESD310C Portable SSD. The ESD310C is Transcend's smallest portable SSD that delivers a lightning-fast transfer rate of 10 Gbps and a capacious storage capacity of up to 512GB, allowing you to transfer vast amounts of files in the blink of an eye. With the inclusion of both USB Type-A and Type-C connectors in a single drive, the ESD310C is a convenient and efficient external storage option that you won't want to miss out on!. . . . Blistering Data Transfer Rates. The ESD310C portable SSD features a super-fast 10Gbps transfer rate and cutting-edge SLC Cache technology, delivering blazing R/W speeds of up to 1050/950 MB/s.