As may be obvious, if you print just a few labels a day and don't need a 4-inch-wide label, a less expensive choice, like the QL-720NW, should be all you need. Beyond that, given the Brother TD-4100N's higher price compared with the TD-4000, and its slower speed for some tasks when using a network...
Automatic cutter; Ethernet connector; Label widths up to 4 inches; Label program plus print driver for printing from other applications
Doesn't print FedEx labels or print labels from UPS Web site