Please note the download speed you get is more likely 4000 kbps, which is equal to: 500 KBytes/sec.
DriveHQ.com has virtually unlimited network bandwidth. We never limit upload speed. ( We do limit download speed to 220KBytes/sec for free service users. )
FYI, consumer type of broadband services are "Asymmetric", meaning the download speed is much faster than Upload speed. For a typical DSL or Cable Modem connection, the maximum upload speed is 384 Kbps, or 45KBytes/sec.
If you use DriveHQ FileManager or WWWBackup, you might notice sometimes the upload speed can be up to 5 times faster than the maximum speed. This is because DriveHQ client software uses compression to speed up file transferring. But it only works for files that can be compressed.
Also note WWWBackup supports incremental backup and advanced caching. So you will see the performance gets better and better as you use it more.