Category C (Class 2) LGV / HGV training runs around Ipswich, Suffolk and uses the DVSA Test Centre in Ipswich. C is the category that allows you to drive a rigid vehicle over 3,500kg.
USB 2.0 is much faster than the DVD data rate. DVD 1x (slowest) write speed is 1.39MB/s. DVD 24x (fastest) write speed is 33.24MB/s. USB 2.0 write speed is up to 35MB/s. A 24x DVD max is about 32MB/s while USB2 max is about 60MB/s.
With any external hard drive interface, keep in mind that you will only achieve its maximum data transfer rate if your computerâand the external hard driveâsupport it. USB 3.0 is capable of 625 MB/s. However, check the rated speed of the external drive (it likely can't move data that fast). For example, the Lacie 4TB d2 USB 3.0 Professional Storage Drive is rated at up to 180 MB/s. The G-Technology 6TB G-Drive G1 USB 3.0 Hard Drive is rated at up to 226 MB/s.