See Details Key Features Easy to extend functions and customize customers demand. Fingerprint capacity- 3000 fingerprint templates Display 3 inch screen 100000 transactions capacity Faster matching speed: less than 1 second Users can easily manage data by networking U300-C via RS232/485, TCP/IP. Most importantly, all the functions can still operate in a networking state U300-C is compatibile with various types of USB flash disks, ADMS and former SDK. It also supports data backup and retrieve to avoid the risk of accidental deletion.It promotes the fingerprint time & attendance management to the next level. You can get the best of benefits from the U300-C.