Check the listing for details. Lexar Professional Workflow HR1 USB 3.0 Quad-Card-Reader-Hub Card-Reader -. Condition: Open box. Listed at 50.65 USD. Item Description: The Lexar Workflow Professional HR1 USB 3.0 Hub is a modular quadruple card reader hub that can accept up to four optional dedicated card readers. With this solution it is possible to quickly transfer files from up to four memory cards using USB 3.0 interfaces at the same time. The unique configurable structure of the hub enables the user to configure different types of readers according to individual needs. The hub can use four of the same memory card types or a combination of different memory card types, such as SDHC / SDXC UHS-I and UHS-II, MicroSDHC / MicroSDXC UHS -I, CompactFlash UDMA 7, CFast 2.0 or XQD memory card types. There are also two flash hard drives with capacities of 256 and 512 GB for the Workflow HR1 Hub. These optional hard drives can be used to store.