USPS Update for DM300c, DM400c, DM450c, DM475
Products affected: DM300c™, DM400c™, DM450c™, DM475™
Check your machine’s software version if you don’t already know it.
Get update instructions by selecting your machine’s software version below:
||Once you've performed the update, it's a good idea to check that your rates were installed successfully by using the Confirm Update tool on the instruction pages.