Buy the Brother QL-1110NWB if labels come from phones, tablets or several computers; buy the Zebra ZD421d if you print from one computer or a wired network and want to buy labels from any supplier. The Brother has Wi-Fi, Bluetooth, Ethernet, USB and AirPrint, prints at 300 dpi, and uses Brother DK rolls. The Zebra configuration linked here (part ZD4A042-D01E00EZ) is a 203 dpi direct thermal printer with USB and Ethernet that takes standard roll or fan-fold direct thermal labels up to 4.25 inches wide. Both handle 4x6 shipping labels.
“Zebra vs Brother” only becomes a useful question once you name models, because both brands sell many printers and the ZD421 alone comes in several resolutions, print methods and connection options. This page compares those two exact products using manufacturer specifications; it is desk research, not hands-on testing.
Exact configuration comparison
| Zebra ZD421d (ZD4A042-D01E00EZ) | Brother QL-1110NWB | |
|---|---|---|
| Print method | Direct thermal | Direct thermal |
| Resolution | 203 dpi | 300 dpi |
| Max print width | 4.09 in | 4 in |
| Media width | 0.585 to 4.25 in (direct thermal) | Up to 4.09 in |
| Media | Roll-fed or fan-fold, die-cut or continuous; rolls up to 5 in outside diameter | Brother DK rolls, such as DK-1241 (4 x 6 in, 200 labels) |
| Connections | USB, USB host, Ethernet; Bluetooth Low Energy for the setup app only | USB, USB host, Ethernet, Wi-Fi (802.11b/g/n), Bluetooth, Wireless Direct; AirPrint |
| Top speed (manufacturer spec) | 6 in per second at 203 dpi | Up to 69 standard address labels per minute (text only) |
| Printer languages | ZPL and EPL | Raster, ESC/P, P-touch Template |
| Cutter | Optional, field-installable | Built-in auto cutter |
The speed figures are measured differently by each manufacturer and are not directly comparable.
Why the Brother suits mixed-device stations
The QL-1110NWB’s advantage is connection choice. Brother lists Bluetooth, Ethernet, Wi-Fi and USB interfaces, plus AirPrint and the iPrint&Label app for Apple and Android devices. That suits a desk where a label is bought on a phone and printed by whoever is packing, or a station shared by a Mac and a Windows PC.
Its constraint is media. The QL-1110NWB uses Brother DK rolls: for shipping, the DK-1241 (4 x 6 in, 200 labels) or the DK-1247 (4.07 x 6.4 in, 180 labels). Brother specifies DK rolls for the QL series, so price the DK roll at your monthly volume before buying the printer. See the Brother QL-1100 review for the USB-only sibling.
Why the Zebra suits a fixed station
The ZD421 is a business desktop printer. Zebra’s spec sheet lists USB and USB host as standard, with Ethernet, serial and Wi-Fi/Bluetooth radios as factory or field-installed options, and notes that the standard Bluetooth Low Energy link is only for its setup app. The Amazon listing linked here is the direct thermal, 203 dpi configuration with Ethernet, which suits a station on one computer or a wired network. It is not a phone-printing printer as configured.
Its strength is media flexibility. Zebra specifies media by type and width (roll or fan-fold, die-cut or continuous, 0.585 to 4.25 inches wide for direct thermal) rather than a proprietary cartridge, so you can buy 4x6 direct thermal labels in rolls or fan-fold stacks from many suppliers. It also speaks ZPL and EPL, the Zebra printer languages.
If you need Wi-Fi, 300 dpi or thermal transfer, those are different ZD421 part numbers. Check the full part number against Zebra’s configuration options before you pay. The ZD421d review covers configurations in more detail, and 203 vs 300 vs 600 dpi for shipping labels explains why 203 dpi is enough for carrier labels.
Before you commit
Test a real label in the return window:
- Export a 4x6 label from each selling platform and carrier you use.
- Print at 100 percent scale, not “fit to page.”
- Check that the barcode quiet zone and service code are not cropped.
- Scan the barcode with the carrier or marketplace app if one is available.
- If the station is shared, reprint from a second device.
Which one should you buy?
Buy the Brother QL-1110NWB when wireless printing from several devices matters and you accept Brother’s DK media.
Buy the Zebra ZD421d USB/Ethernet configuration when the printer sits at a fixed station on a computer or wired network and you want to buy standard 4-inch direct thermal labels from any supplier.
Sources
- Zebra ZD421 product page : 203 or 300 dpi and connectivity chosen as configurations, 4 in print width.
- Zebra ZD421 spec sheet (PDF) : standard and optional interfaces, BLE for setup app only, print width, 6 ips at 203 dpi, media types, widths and roll size, ZPL and EPL, optional cutter.
- Amazon listing B09BXZVGXQ : part ZD4A042-D01E00EZ, 203 dpi, direct thermal, listed with Bluetooth, Ethernet and USB connectivity (used to confirm this exact part; Zebra’s spec sheet says the standard Bluetooth Low Energy link is for the setup app only).
- Brother QL-1110NWB product page : 300 dpi, interfaces, AirPrint and iPrint&Label, label and print width, speed, printer emulation, auto cutter.
- Brother DK-1241 product page : 4 x 6 in die-cut labels, 200 per roll, compatible with the QL-1110NWB.
- Brother DK-1247 product page : 4.07 x 6.4 in die-cut labels, 180 per roll.
FAQ
Is the Zebra ZD421d or Brother QL-1110NWB better for a small seller?
The Brother QL-1110NWB if labels are printed from phones, tablets or several computers, since it has Wi-Fi, Bluetooth and AirPrint. The Zebra ZD421d if you print from one computer or a wired network and want to buy 4-inch direct thermal labels from any supplier.
Can both printers handle 4x6 shipping labels?
Yes. Zebra lists a 4.09 inch print width at 203 dpi and direct thermal media up to 4.25 inches wide. Brother lists a 4 inch print width and the DK-1241 4 x 6 inch die-cut label for the QL-1110NWB.
Does every Zebra ZD421 include Wi-Fi or Bluetooth printing?
No. Zebra’s spec sheet lists USB and USB host as standard, with Ethernet, serial and Wi-Fi/Bluetooth radios as options. The standard Bluetooth Low Energy connection is only for Zebra’s printer setup app. The listing linked here (ZD4A042-D01E00EZ) is the USB and Ethernet configuration.
Which prints at a higher resolution?
The Brother QL-1110NWB prints at 300 dpi. The linked Zebra ZD421d configuration is 203 dpi; Zebra sells a 300 dpi ZD421 as a separate configuration. For 4x6 carrier labels, 203 dpi is enough.
Related guides
- DYMO LabelWriter 5XL Review: Genuine Labels, USB and Ethernet
Spec-based DYMO LabelWriter 5XL review: 300 dpi, 4.16-inch print width, USB and Ethernet, the authentic-label requirement, DYMO Connect setup and a label cost worksheet. - Rollo Wireless X1040 Review: AirPrint Helps Only After File Fit
A researched Rollo Wireless X1040 review covering AirPrint, Wi-Fi and USB, 203 dpi, label widths, rear-feed desk space, setup, file scaling, and buyer fit. - Zebra ZD421d Review: Buy the Configuration, Not Just the Family Name
A researched Zebra ZD421d review covering direct thermal identity, 203 versus 300 dpi, USB/Ethernet/Wi-Fi configurations, media, calibration, ZPL, maintenance, and fit. - Zebra ZD421 vs Rollo Wireless X1040: Which 4x6 Printer?
Zebra ZD421 vs Rollo Wireless X1040: same 203 dpi and roughly the same speed. Rollo wins on Wi-Fi and AirPrint out of the box; Zebra on Ethernet, ZPL, 300 dpi and thermal transfer options. - Rollo Wireless X1040 vs MUNBYN 941AP: Specs and Which to Buy
Rollo X1040 vs MUNBYN 941AP: both 203 dpi AirPrint Wi-Fi printers at 150 mm/s. MUNBYN is cheaper with a 2-year warranty; Rollo adds Linux, a 30-day return window and Rollo Ship.